Pith Number

pith:UOJS3FUL

pith:2016:UOJS3FULY37QRWD7QQ5DOYUST5

not attested not anchored not stored refs pending

A counterexample to the easy direction of the geometric Gersten conjecture

David Bruce Cohen

arxiv:1612.03491 v2 · 2016-12-11 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UOJS3FULY37QRWD7QQ5DOYUST5}

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.

Receipt and verification

First computed	2026-05-17T23:54:11.911866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3932d968bc6ff08d87f843a3762929f452c75ee11e5f1ebe60aee65b4f02f8b

Aliases

arxiv: 1612.03491 · arxiv_version: 1612.03491v2 · doi: 10.48550/arxiv.1612.03491 · pith_short_12: UOJS3FULY37Q · pith_short_16: UOJS3FULY37QRWD7 · pith_short_8: UOJS3FUL

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/UOJS3FULY37QRWD7QQ5DOYUST5 \
  | 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: a3932d968bc6ff08d87f843a3762929f452c75ee11e5f1ebe60aee65b4f02f8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "321304e03ba801dca9de085ce3b80dfaf32ca0a177c6be54793712bfd0e6c5c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2016-12-11T22:11:44Z",
    "title_canon_sha256": "fbb251a88684120b238080c7c0c6dd92f73451937c32a4a4d60eb84bcac5b656"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.03491",
    "kind": "arxiv",
    "version": 2
  }
}