Pith Number

pith:Q5E5SH4Q

pith:2009:Q5E5SH4Q7LDBPREBNACCGG2FBK

not attested not anchored not stored refs pending

A census of genus two 3-manifolds up to 42 coloured tetrahedra

Carlo Gagliardi, Paola Bandieri, Paola Cristofori

arxiv:0902.0492 v1 · 2009-02-03 · 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{Q5E5SH4Q7LDBPREBNACCGG2FBK}

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	2026-05-18T04:01:11.820609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8749d91f90fac617c4816804231b450a929d5e6117dfbfa3282dc1a588667eb5

Aliases

arxiv: 0902.0492 · arxiv_version: 0902.0492v1 · doi: 10.48550/arxiv.0902.0492 · pith_short_12: Q5E5SH4Q7LDB · pith_short_16: Q5E5SH4Q7LDBPREB · pith_short_8: Q5E5SH4Q

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/Q5E5SH4Q7LDBPREBNACCGG2FBK \
  | 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: 8749d91f90fac617c4816804231b450a929d5e6117dfbfa3282dc1a588667eb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c5d9d910ff9f8ea60f65afc12fb7b9da67737d8a5a0c392735662fba1a952c7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2009-02-03T12:33:21Z",
    "title_canon_sha256": "0ac72faf6158026723d4d484cbe61267a17574617a3e538c436630fd4b6c097e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0492",
    "kind": "arxiv",
    "version": 1
  }
}