Pith Number

pith:NA7WNWK6

pith:2015:NA7WNWK6WNNALL2HS327EPMJTU

not attested not anchored not stored refs pending

Comparing persistence diagrams through complex vectors

Barbara Di Fabio, Massimo Ferri

arxiv:1505.01335 v2 · 2015-05-06 · math.AT · 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{NA7WNWK6WNNALL2HS327EPMJTU}

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	2026-05-18T01:37:10.819561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

683f66d95eb35a05af4796f5f23d899d3d9cf53e71c961bf1795f9c688292c6c

Aliases

arxiv: 1505.01335 · arxiv_version: 1505.01335v2 · doi: 10.48550/arxiv.1505.01335 · pith_short_12: NA7WNWK6WNNA · pith_short_16: NA7WNWK6WNNALL2H · pith_short_8: NA7WNWK6

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/NA7WNWK6WNNALL2HS327EPMJTU \
  | 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: 683f66d95eb35a05af4796f5f23d899d3d9cf53e71c961bf1795f9c688292c6c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee7e894291351a0c4c2283150962fc4678a45acf7d0f9a717c03ef6366fc3e7e",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-05-06T12:13:26Z",
    "title_canon_sha256": "bf57254ad2a3c3af1e6a2fe5ece09205e6cc824f2b3aac76d31076b021d891dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01335",
    "kind": "arxiv",
    "version": 2
  }
}