Pith Number

pith:OQJ3Y6FB

pith:2011:OQJ3Y6FBGH7F7UVDA6HEVYF5M3

not attested not anchored not stored refs pending

Rigidity problems in toric topology, a survey

Dong Youp Suh, Mikiya Masuda, Suyoung Choi

arxiv:1102.1359 v2 · 2011-02-07 · math.AT · math.CO · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQJ3Y6FBGH7F7UVDA6HEVYF5M3}

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	2026-05-18T03:59:47.843963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7413bc78a131fe5fd2a3078e4ae0bd66c93eead9ff5a678fd1c4249fe9234d3c

Aliases

arxiv: 1102.1359 · arxiv_version: 1102.1359v2 · doi: 10.48550/arxiv.1102.1359 · pith_short_12: OQJ3Y6FBGH7F · pith_short_16: OQJ3Y6FBGH7F7UVD · pith_short_8: OQJ3Y6FB

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/OQJ3Y6FBGH7F7UVDA6HEVYF5M3 \
  | 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: 7413bc78a131fe5fd2a3078e4ae0bd66c93eead9ff5a678fd1c4249fe9234d3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a18d9c95ed1af99867e83cb2e4cf4115c149e36082888af75272c353f8751ce8",
    "cross_cats_sorted": [
      "math.CO",
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-02-07T16:48:46Z",
    "title_canon_sha256": "6d40b6505657a5c50f1f41f60af639e133b1a7d417f442dbd89cc8ee6af00686"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1359",
    "kind": "arxiv",
    "version": 2
  }
}