Pith Number

pith:JIIE4ZD2

pith:2013:JIIE4ZD2MCG3QOFBOBPEA7HTYJ

not attested not anchored not stored refs pending

On the intersection form of surfaces

Bjoern Muetzel, Daniel Massart

arxiv:1302.4692 v2 · 2013-02-19 · math.DG · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JIIE4ZD2MCG3QOFBOBPEA7HTYJ}

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	2026-05-18T00:45:22.858167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a104e647a608db838a1705e407cf3c242af63932ffe42abf5a9066c6606773d

Aliases

arxiv: 1302.4692 · arxiv_version: 1302.4692v2 · doi: 10.48550/arxiv.1302.4692 · pith_short_12: JIIE4ZD2MCG3 · pith_short_16: JIIE4ZD2MCG3QOFB · pith_short_8: JIIE4ZD2

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/JIIE4ZD2MCG3QOFBOBPEA7HTYJ \
  | 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: 4a104e647a608db838a1705e407cf3c242af63932ffe42abf5a9066c6606773d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f929f4dcd76459f1fa08d3fec47246e5b6bc206b881fa61139641ddc8f6d8aff",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-02-19T17:42:22Z",
    "title_canon_sha256": "243c59713f1c9d7db02c5bf5b394013863699de9e4514fdd046736e84f5ff436"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4692",
    "kind": "arxiv",
    "version": 2
  }
}