Pith Number

pith:6FMZTUP6

pith:2013:6FMZTUP6UQZM6ETDCSIIM4537A

not attested not anchored not stored refs pending

Combining persistent homology and invariance groups for shape comparison

Grzegorz Jablonski, Patrizio Frosini

arxiv:1312.7219 v4 · 2013-12-27 · math.AT · cs.CG · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6FMZTUP6UQZM6ETDCSIIM4537A}

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	2026-05-18T01:21:45.328588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f15999d1fea432cf126314908673bbf81898c4c395b9b58c9864615c52105508

Aliases

arxiv: 1312.7219 · arxiv_version: 1312.7219v4 · doi: 10.48550/arxiv.1312.7219 · pith_short_12: 6FMZTUP6UQZM · pith_short_16: 6FMZTUP6UQZM6ETD · pith_short_8: 6FMZTUP6

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/6FMZTUP6UQZM6ETDCSIIM4537A \
  | 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: f15999d1fea432cf126314908673bbf81898c4c395b9b58c9864615c52105508

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a7ed94a545afc1d7c311eff4539676d2ec8b236993946562ce0c30be7c0bced",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-12-27T09:09:36Z",
    "title_canon_sha256": "21bae24c709e40ac96a9a5ac282e28d0129118bb852b59416525885ad9b02ee3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.7219",
    "kind": "arxiv",
    "version": 4
  }
}