Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T13:41:04.950519Z
Paper Citation Record · LEDGER
As of 16 August 2026, this Paper Citation Record lists 58 of 58 outbound references and 0 inbound Pith citation observations for arXiv:1908.04880.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-08-14T13:41:04.950519Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-16T06:30:59.297886+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
58 of 58 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation 85266d57-7451-4920-a638-8b5148a82e05 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , On the uniqueness of the coefficient ring in a polynomial ring , J
Reference 1
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation bed3e046-6ef7-4355-adac-69bf57abde88 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Ore and Goldie theorems for skew PBW extensions , Asian-European Journal of Mathematics, 6 (4), 2013, 1350061 - 1; 1350061-20
Reference 2
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 7f36f4f4-5099-44d9-9b8c-2a8772d2cc64 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Reyes, M.A
Reference 3
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 9d051e5a-3682-46ab-8830-af4a3e8e00fb · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and V an den Bergh, M
Reference 4
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation e44ecdae-4f1b-4a21-99c8-377dba16bdfc · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Dumas, F
Reference 5
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 267c8154-62b2-4579-a25d-756de383d3b3 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Serre’s quantum problem, Russian Math
Reference 6
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 28a3899a-1505-464a-9dda-4f863285b806 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , On projective modules over quantum polynomials , Journal of Mathematical Sci- ences, 93(2), 1999, 135-148
Reference 7
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 668ad469-f773-4c14-b9d3-dc70924d17c2 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings A., Lezama, O., and F ajardo, W
Reference 8
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 04fc77e1-5aa1-40e9-a241-009b4557a203 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Graded algebras of global dimension 3 , Advances in Mathematics, 66, 1987, 171-216
Reference 9
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation d55202ae-f216-4c4e-b6d3-9418f2b89730 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Zhang J
Reference 10
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 10842a40-1e9c-4c05-acf5-6ae0e22fb2aa · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Projective modules over algebras , Annals of Math
Reference 11
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 54d1f617-8787-4346-b814-16a404f7674e · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Pure Appl
Reference 12
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 32841b32-7a39-44bc-877a-8d3f3a77113d · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 13
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation f3ee8090-eec6-449b-b9fe-25a22850df83 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Gelfand-Kirillov conjecture in positive characteristics , J
Reference 14
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation a58bcebd-d76a-47c7-b80b-726507e480fe · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings of Algebra, 2003, 476-518
Reference 15
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c559f2b7-22d6-4c49-8075-ae199d94c267 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , The discriminant controls automor- phism groups of noncommutative algebras , Adv
Reference 16
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 69102ad1-b16b-474e-91ab-9afdd7b18d42 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , The discriminant criterion and the automorphism groups of quantized algebras , Adv
Reference 17
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 57fcbe77-f0dd-4e30-8628-9c921600a5a9 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ea819a3b-d078-46e2-997c-5cfd62a0115b · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Thesis, Universidad Nacional de Colombia, Bogot´ a, 2018
Reference 19
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 2fab966d-6ffd-4355-b074-504d6d093ade · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ca8d7993-f6fe-4e8c-953d-6dd0baa7c0eb · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Lezama, O
Reference 21
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c093e370-5d01-4fb6-b35c-4df542e416eb · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Japan Acad., 55(A), 1979, 106-110
Reference 22
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation e00fdc2c-f0ab-4d73-8f0d-cd24140c034b · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , The Gelfand-Kirillov conjecture and Gelfand- Tsetlin modules for finite W-algebras , Advances in Mathematics, 223, (2010), 773-796
Reference 23
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 4e01192d-7362-4309-9add-f0b395038841 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 24
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation ca58bcbf-9b9c-4f4d-b160-681aa676063a · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 25
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation bf60fd0c-66d2-4fd1-800a-c0d5f22bce4a · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 26
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation bad4c903-11c6-4c14-aaf5-43422fb7cedf · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Lezama, O
Reference 27
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c8bd48f9-622e-42a3-a223-b63bcdcd2932 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Kirillov, A
Reference 28
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 1e31dfb5-b3ab-444c-972d-f4839a79d596 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Sur quelques points d’alg` ebre homologique , Tˆ ohoku Math
Reference 29
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 47056f07-7ad2-4cc1-9d2d-2e04ebd774df · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , On Zariski’s cancellation problem in positive characteris tic, Adv
Reference 30
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 9128e60e-aa4f-4c7a-94ce-c093855f51eb · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , On the Cancellation Problem for the Affine Space A3 in characteristic p, Inventiones Math., 195, 2014 (1), 279–288
Reference 31
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 79e2361e-8ddb-456c-8af7-a3f5a91e9deb · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Proof of the Gelfand-Kirillov conjecture for solvable Lie a lgebras, Pro
Reference 32
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 55eab87e-7129-44f7-bd39-ccec900dadf5 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , A generalization of the Gelfand-Kirillov conjecture , American Journal of Mathematics, 99, (1977), 1151-1165
Reference 33
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 835d0f1e-43d8-48ec-96b6-259900173dd9 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Serre’s Problem on Projective Modules , Springer Monographs in Mathematics, Springer, 2006
Reference 34
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 59e8a0b1-f5c7-4797-a7e0-e24054fa9066 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Some aplications of Gr¨ obner bases in homological algebra , S˜ao Paulo Journal of Mathematical Sciences, 3, 2009, 25-59
Reference 35
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation a7e1ec69-8d00-4d89-905f-373b64ef8096 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Gallego, C
Reference 36
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 77f71e5d-b39d-488d-8f9a-46af4c1aae62 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Latorre, E
Reference 37
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation b2cff38e-8b15-4b11-bdf7-9fc42ba6a0e2 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings & Reyes, M
Reference 38
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation b1d8013b-fd16-4359-a735-f77f25d9e49a · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Center of skew PBW extensions
Reference 39
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 936723e1-2112-4f1a-a760-b4722fad9511 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Zariski cancellation problem for non-domain noncommutative algebras,to appear in Mathematische Zeitschrift
Reference 40
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation c3d978fd-ee7e-47c0-a9db-025ef0af34aa · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Zhou G.-S , Artin-Schelter regular algebras of dimension five with two g enerators, Journal of Pure and Applied Algebra, 218, 2014, 937-961
Reference 41
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 5eea0c2c-c4b5-4b78-a4e5-eba940a85359 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 42
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 73cc02ad-edf9-4242-8923-be4a72098fd3 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Robson, J
Reference 43
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 1ca47a13-1850-4493-ad77-d5a21646f46e · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Sugie, T
Reference 44
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 5037c369-fe2a-4379-84b2-689ecb659868 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , The Gelfand-Kirillov conjecture for semi-direct products of Lie algebras , J
Reference 45
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation e843ccc3-adcc-4c97-ad05-0a8ac0278896 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Projective modules over polynomial rings , Invent
Reference 46
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 90977117-c6eb-4cc8-a81d-5245cc5b2534 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Armendariz modules over skew PBW extensions , Comm
Reference 47
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation e58dbf89-cb2c-432a-a5f0-ebde18793a43 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Su´ arez, H
Reference 48
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 1cad4923-d451-4b27-82f1-aede65319088 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Su´ arez, H
Reference 49
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 23b53fe3-9266-4523-95ec-2003c59bbf23 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Su´ arez, H., Skew Poincar´ e-Birkhoff-Witt extensions over weak zip ring s, Contri- butions to Algebra and Geometry, 60 (2), 2019, 197-216
Reference 50
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 0cd069a0-5b75-45da-9807-effa21f51444 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings An introduction to Noncommutative Projective Geometry
Reference 51
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 5b86c5fd-1b62-4a06-8ab7-c90e8482503d · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Ann., 255(3), 1981, 287-302
Reference 52
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 81a2efd3-7561-4fe8-a476-c86272e268f9 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Math., 61, 1955, 191-278
Reference 53
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 6f05f756-7768-4734-a8d5-61b30bea9cc7 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Unresolved cited work
Reference 54
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 204ea84b-1f78-4b60-9e40-09a29e7ad586 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings , Projective modules over polynomial rings are free , Soviet Math
Reference 55
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 9bed7f5e-eeca-44be-8263-f29c6177e5eb · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings Cancellation problem for AS-Regular algebras of dimension three
Reference 56
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation dad59dd6-b477-4968-94c9-b174689109cf · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings B., Serr´ e injective sheaves, Mat
Reference 57
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
Observation 7d2d5c9d-9176-42f9-8ebc-92da96df56c0 · outbound
Some open problems in the context of skew PBW extensions and semi-graded rings and Wang, D
Reference 58
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-16T06:30:59.297886+00:00.
No inbound Pith citation observations are available.