Pith Number

pith:MEVNPFSY

pith:2012:MEVNPFSY372FL3EV7ZK5XUCTMG

not attested not anchored not stored refs pending

Fatgraph Algorithms and the Homology of the Kontsevich Complex

Riccardo Murri

arxiv:1202.1820 v2 · 2012-02-08 · math.AG · cs.CG · cs.MS · 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{MEVNPFSY372FL3EV7ZK5XUCTMG}

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	2026-05-18T04:02:14.615006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

612ad79658dff455ec95fe55dbd05361a7eef65e61b38a3863f78c8f0c5e99aa

Aliases

arxiv: 1202.1820 · arxiv_version: 1202.1820v2 · doi: 10.48550/arxiv.1202.1820 · pith_short_12: MEVNPFSY372F · pith_short_16: MEVNPFSY372FL3EV · pith_short_8: MEVNPFSY

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/MEVNPFSY372FL3EV7ZK5XUCTMG \
  | 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: 612ad79658dff455ec95fe55dbd05361a7eef65e61b38a3863f78c8f0c5e99aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10e52607d04c32b0d8ffce20436060d97499225266cec033db87f1a1f388967e",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.MS",
      "math.GT"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-02-08T20:58:11Z",
    "title_canon_sha256": "9d959dabe8154141cde78b690cdd2e359db34afe34819af26916583a458cbede"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1820",
    "kind": "arxiv",
    "version": 2
  }
}