Pith Number

pith:2ANKJUN7

pith:2025:2ANKJUN76ML3AATQEONS7AKRXO

not attested not anchored not stored refs pending

Classifying group actions on hyperbolic spaces

D. Osin, K. Oyakawa

arxiv:2504.21203 v1 · 2025-04-29 · math.GR · math.GT · math.LO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ANKJUN76ML3AATQEONS7AKRXO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

The isomorphism problem for finitely generated bi-orderable groups

Receipt and verification

First computed	2026-07-05T10:56:19.266854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d01aa4d1bff317b00270239b2f8151bb99721990bc326a6cf75367a1733d282c

Aliases

arxiv: 2504.21203 · arxiv_version: 2504.21203v1 · doi: 10.48550/arxiv.2504.21203 · pith_short_12: 2ANKJUN76ML3 · pith_short_16: 2ANKJUN76ML3AATQ · pith_short_8: 2ANKJUN7

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2ANKJUN76ML3AATQEONS7AKRXO \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d01aa4d1bff317b00270239b2f8151bb99721990bc326a6cf75367a1733d282c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfff1251032bd1ce5c4bc09c8fef868a8cd9f2f46f91ccfe3a69652e20a06375",
    "cross_cats_sorted": [
      "math.GT",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2025-04-29T22:18:52Z",
    "title_canon_sha256": "f4517f560026bed820389fb358974a134e709ad0645847f3d9e0597328e70c54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.21203",
    "kind": "arxiv",
    "version": 1
  }
}