Pith Number

pith:ENCCTQQ4

pith:2009:ENCCTQQ4EVC3FGC3JYSB35OXDG

not attested not anchored not stored refs pending

Enumerating simplicial decompositions of surfaces with boundaries

Juanjo Ru\'e, Olivier Bernardi (LM-Orsay)

arxiv:0901.1608 v1 · 2009-01-12 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ENCCTQQ4EVC3FGC3JYSB35OXDG}

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	2026-05-18T04:00:16.277041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

234429c21c2545b2985b4e241df5d719bab3e922d16e6ce5ba1b877ea3ac8820

Aliases

arxiv: 0901.1608 · arxiv_version: 0901.1608v1 · doi: 10.48550/arxiv.0901.1608 · pith_short_12: ENCCTQQ4EVC3 · pith_short_16: ENCCTQQ4EVC3FGC3 · pith_short_8: ENCCTQQ4

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/ENCCTQQ4EVC3FGC3JYSB35OXDG \
  | 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: 234429c21c2545b2985b4e241df5d719bab3e922d16e6ce5ba1b877ea3ac8820

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "809c7f5314f8faa4ac81700096c64b622769bf0915ff8fc72da12b0d3ade63d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2009-01-12T16:31:38Z",
    "title_canon_sha256": "00a8248c526ccd8f857e6f9376ea878a11f12bcc0b0615af408ed2484018bb17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1608",
    "kind": "arxiv",
    "version": 1
  }
}