Pith Number

pith:L2DQDSIE

pith:2012:L2DQDSIECCOL3UPJXWOOMNOZM4

not attested not anchored not stored refs pending

Effective Topological Degree Computation Based on Interval Arithmetic

Peter Franek, Stefan Ratschan

arxiv:1207.6331 v3 · 2012-07-26 · cs.CG · 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{L2DQDSIECCOL3UPJXWOOMNOZM4}

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	2026-05-18T02:58:57.808645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e8701c904109cbdd1e9bd9ce635d9671f9ade77789f75ff6bdc2b2b5a00d279

Aliases

arxiv: 1207.6331 · arxiv_version: 1207.6331v3 · doi: 10.48550/arxiv.1207.6331 · pith_short_12: L2DQDSIECCOL · pith_short_16: L2DQDSIECCOL3UPJ · pith_short_8: L2DQDSIE

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/L2DQDSIECCOL3UPJXWOOMNOZM4 \
  | 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: 5e8701c904109cbdd1e9bd9ce635d9671f9ade77789f75ff6bdc2b2b5a00d279

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "361b0bed83ae44e1c59cb0322563d4f9f60e23d11cf18aeee4caa23902118a88",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-07-26T17:07:35Z",
    "title_canon_sha256": "98871f3fd3aa31e95672eb9847cc6a2c1e7c8488997a324bbddc151a7aca646a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6331",
    "kind": "arxiv",
    "version": 3
  }
}