Pith Number

pith:PLZ3R5MQ

pith:2014:PLZ3R5MQPWKQDFRD2VYDT2UDEG

not attested not anchored not stored refs pending

Computing minimum area homologies

Erin Wolf Chambers, Mikael Vejdemo-Johansson

arxiv:1410.2320 v1 · 2014-10-09 · cs.CG · cs.GR · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PLZ3R5MQPWKQDFRD2VYDT2UDEG}

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	2026-05-18T02:40:46.691237Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7af3b8f5907d95019623d57039ea83218e716d3fe9b28fa48782cc0c72fa977c

Aliases

arxiv: 1410.2320 · arxiv_version: 1410.2320v1 · doi: 10.48550/arxiv.1410.2320 · pith_short_12: PLZ3R5MQPWKQ · pith_short_16: PLZ3R5MQPWKQDFRD · pith_short_8: PLZ3R5MQ

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/PLZ3R5MQPWKQDFRD2VYDT2UDEG \
  | 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: 7af3b8f5907d95019623d57039ea83218e716d3fe9b28fa48782cc0c72fa977c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "149ae68545ce27b961fcb71cd175f2ef89cca76f3376d6c81ad2536da7605bad",
    "cross_cats_sorted": [
      "cs.GR",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2014-10-09T00:40:45Z",
    "title_canon_sha256": "c266b6272caeb151e8bf0fceb3e7fe4906f1b36314ea724d92381d16029fb17f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.2320",
    "kind": "arxiv",
    "version": 1
  }
}