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Paper Citation Record · LEDGER

Undecidability of Translational Tiling of the Plane with Four Tiles

As of 22 August 2026, this Paper Citation Record lists 18 of 18 outbound references and 0 inbound Pith citation observations for arXiv:2506.19295.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2506.19295 v1

Coverage vector

measured 18 of 18 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-15T18:44:02.496919Z

measured 18 of 18 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-22T06:32:14.747728+00:00

measured 0 of 0 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links

measured 0 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: cited_works

Reference resolution

18 of 18 outbound references displayed

  • verified exact1
  • verified fuzzy11
  • unresolved6
  • parse uncertain0
  • malformed identifier0
  • metadata mismatch0

External citation measurements

No source-named external measurement is stored.

Outbound references

Observation a826b0ef-3d8d-40c2-af17-3b18bf1d0709 · outbound

This paper cites Ammann, B.

Undecidability of Translational Tiling of the Plane with Four Tiles Ammann, B

Reference 1

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.877326Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.403107Z digest=sha256:5d18d9122c321c53bde86a187c03592313685ea0173ade1c7b953151e21cab1e

Observation c94b2aa1-bfdf-4f59-89dc-d07afa750549 · outbound

This paper cites Beauquier, M.

Undecidability of Translational Tiling of the Plane with Four Tiles Beauquier, M

Reference 2

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.858444Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.409722Z digest=sha256:3abee5b5ef35c186e4210d4f4c31e18da5ea60bbf57c99c1187ee6cba323b467

Observation ad4d01d2-016e-47f1-87c5-893be6e8e73e · outbound

This paper cites Berger, The undecidability of the domino problem,Memoirs of the American Mathemat- ical Society,66(1966), 1-72.

Undecidability of Translational Tiling of the Plane with Four Tiles Berger, The undecidability of the domino problem,Memoirs of the American Mathemat- ical Society,66(1966), 1-72

Reference 3

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.840740Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.415578Z digest=sha256:12dc401764f03838fb6f71096a6f0f4b6f735e54acae9e4179d75beafcd3579a

Observation 50112b5b-c3d8-4a94-9e80-28b1991d5712 · outbound

This paper cites Bhattacharya, Periodicity and decidability of tilings ofZ 2.American Journal of Mathe- matics,142(2020), 255-266.

Undecidability of Translational Tiling of the Plane with Four Tiles Bhattacharya, Periodicity and decidability of tilings ofZ 2.American Journal of Mathe- matics,142(2020), 255-266

Reference 4

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.823923Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.421216Z digest=sha256:88ee237ba9b5eed1492214438ba26a4f47a1dd05247ae459e184feb04fe52738

Observation 72d53266-6746-4937-9a7d-32b16950c6ad · outbound

This paper cites Greenfeld, T.

Undecidability of Translational Tiling of the Plane with Four Tiles Greenfeld, T

Reference 5

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.807776Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.427043Z digest=sha256:28263935b9fd5b41c9c6a4f566a7fa227805a57c2d66f0a1a1fe285733fdd66d

Observation 162f9c9a-9509-4063-a75c-6927a07c5911 · outbound

This paper cites Greenfeld, T.

Undecidability of Translational Tiling of the Plane with Four Tiles Greenfeld, T

Reference 6

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.789513Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.433572Z digest=sha256:ee96e57d225514b61065682aa3d0a53d738bd9b22e916d65fb73b2bf66085a9d

Observation 33ca66ba-8e9a-4514-961b-eb509f132a06 · outbound

This paper cites Undecidability of translational monotilings.

Undecidability of Translational Tiling of the Plane with Four Tiles Undecidability of translational monotilings

Reference 7

Resolution
unresolved
no resolver link, observed 2026-08-15T18:44:02.439171Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-15T18:44:02.439171Z digest=sha256:ad073a930e18ed568331159620571015c2ec373d1a9352880f98ca9631dd7630

Observation 66d4627a-8f99-4fe7-af52-89ecdaf89d66 · outbound

This paper cites Kim, Undecidability of tiling the plane with a set of 5 polyominoes, (2025), a manuscript.

Undecidability of Translational Tiling of the Plane with Four Tiles Kim, Undecidability of tiling the plane with a set of 5 polyominoes, (2025), a manuscript

Reference 8

Resolution
unresolved
no resolver link, observed 2026-08-15T18:44:02.444386Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-15T18:44:02.444386Z digest=sha256:cbb29e04a180f8a4f79394d0bea49cf86eed0015e5001b6b250045e545e4d6c6

Observation 8c7346c6-94b8-4521-a77d-7d858530bfb8 · outbound

This paper cites Ollinger, Tiling the plane with a fixed number of polyominoes, In: A.H.

Undecidability of Translational Tiling of the Plane with Four Tiles Ollinger, Tiling the plane with a fixed number of polyominoes, In: A.H

Reference 9

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.756226Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.449051Z digest=sha256:4dcac60bbc46ae7e74de828c944f1ed6c1f4b9c20027dc11dbe293ab1e82314d

Observation 367f9f51-1027-4239-beeb-b2474bca9e7a · outbound

This paper cites an unresolved cited work.

Undecidability of Translational Tiling of the Plane with Four Tiles Unresolved cited work

Reference 10

Resolution
unresolved
raw_fallback, observed 2026-08-15T18:44:02.738154Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.453395Z digest=sha256:d39c7db3d61d802f50d45003a9a7cf994d07aac7792a97929eca4850a2a11bde

Observation a0a49bd3-1b95-49d6-ad33-c7408ae927cf · outbound

This paper cites Wang, Proving theorems by pattern recognition-II,Bell System Technical Journal, 40(1961) 1-41.

Undecidability of Translational Tiling of the Plane with Four Tiles Wang, Proving theorems by pattern recognition-II,Bell System Technical Journal, 40(1961) 1-41

Reference 11

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.719990Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.458492Z digest=sha256:eca3f4bfa6d3146a3bb7bf01ca4f38a9d780bc7c31fc740facb2f37c6f4f251f

Observation f6386434-0849-4482-9fcd-6af3c4b047a1 · outbound

This paper cites Winslow, An optimal algorithm for tiling the plane with a translated polyomino, In: K.

Undecidability of Translational Tiling of the Plane with Four Tiles Winslow, An optimal algorithm for tiling the plane with a translated polyomino, In: K

Reference 12

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.702524Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.463159Z digest=sha256:99427fd63a9d64645ccbf5ade38258e7de41bcf71d33a581ddffffe898471b3c

Observation 0e2e1fa3-e5ef-4c2c-a586-78a8da68d493 · outbound

This paper cites Yang, Tiling the plane with a set of ten polyominoes,International Journal of Computa- tional Geometry & Applications,33(03n04)(2023), 55-64.

Undecidability of Translational Tiling of the Plane with Four Tiles Yang, Tiling the plane with a set of ten polyominoes,International Journal of Computa- tional Geometry & Applications,33(03n04)(2023), 55-64

Reference 13

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.684285Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.469040Z digest=sha256:37049503bc4ade500bcc2d917b38d80b4fa7338b3a88fd45618c639d47f0f41f

Observation c87f2082-9020-4a32-8da8-f33991e87e44 · outbound

This paper cites Yang, On the undecidability of tiling the plane with a set of 9 polyominoes (in Chinese), SCIENTIA SINICA Mathematica,55(6)(2025), 1113-1122.

Undecidability of Translational Tiling of the Plane with Four Tiles Yang, On the undecidability of tiling the plane with a set of 9 polyominoes (in Chinese), SCIENTIA SINICA Mathematica,55(6)(2025), 1113-1122

Reference 14

Resolution
verified fuzzy
raw_fallback, observed 2026-08-15T18:44:02.666862Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.474886Z digest=sha256:28c93257dbdacef0be7cd996ea71aac4da88e600302372977bb001f2772c97d1

Observation f27d23cf-91f3-41a5-899d-85051db39206 · outbound

This paper cites an unresolved cited work.

Undecidability of Translational Tiling of the Plane with Four Tiles Unresolved cited work

Reference 15

Resolution
unresolved
no resolver link, observed 2026-08-15T18:44:02.480109Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-15T18:44:02.480109Z digest=sha256:1dc01e3d160a51f43aa36aa9534de982c08070c77eab8e2cd04db912c1f73384

Observation d6db1482-317c-4afb-b3d3-ba3cc5c60fa9 · outbound

This paper cites Translational Aperiodic Sets of 7 Polyominoes.

Undecidability of Translational Tiling of the Plane with Four Tiles Translational Aperiodic Sets of 7 Polyominoes

Reference 16

Resolution
unresolved
no resolver link, observed 2026-08-15T18:44:02.485667Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-15T18:44:02.485667Z digest=sha256:71dfadb829500c503591921077f9b8ea821570764c7c0f81c47a7dba5f048efe

Observation 0fa724b2-5068-453f-abef-a3770154dac3 · outbound

This paper cites Undecidability of Translational Tiling with Three Tiles.

Undecidability of Translational Tiling of the Plane with Four Tiles Undecidability of Translational Tiling with Three Tiles

Reference 17

Resolution
unresolved
no resolver link, observed 2026-08-15T18:44:02.491583Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

source=pdf_text observed=2026-08-15T18:44:02.491583Z digest=sha256:138f5b2ac2e51b8036c8818d935eda8656a74072ff95eda472699aa7108d2d62

Observation f43894c1-8520-421c-81d0-a71573e03228 · outbound

This paper cites Undecidability of Translational Tiling of the Plane with Orthogonally Convex Polyominoes.

Undecidability of Translational Tiling of the Plane with Four Tiles Undecidability of Translational Tiling of the Plane with Orthogonally Convex Polyominoes

Reference 18

Resolution
verified exact
local_arxiv, observed 2026-08-15T18:44:02.592670Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.

source=pdf_text observed=2026-08-15T18:44:02.496919Z digest=sha256:402712ba3a9a5a950fcb26749c62439198d24a0ff74881b6c64313c1af86c85e

Pith citing papers

No inbound Pith citation observations are available.