Pith Number

pith:H3R43AQS

pith:2015:H3R43AQSB5LFI2PDVR7QB25ERR

not attested not anchored not stored refs pending

$P$-persistent homology of finite topological spaces

Alice Patania, Francesco Vaccarino, Giovanni Petri

arxiv:1502.04873 v1 · 2015-02-17 · math.AT · cs.CG · math.CO · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H3R43AQSB5LFI2PDVR7QB25ERR}

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	2026-05-18T02:26:53.649844Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3ee3cd82120f565469e3ac7f00eba48c54e70096c7722cfd5d7cf67e355cd739

Aliases

arxiv: 1502.04873 · arxiv_version: 1502.04873v1 · doi: 10.48550/arxiv.1502.04873 · pith_short_12: H3R43AQSB5LF · pith_short_16: H3R43AQSB5LFI2PD · pith_short_8: H3R43AQS

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/H3R43AQSB5LFI2PDVR7QB25ERR \
  | 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: 3ee3cd82120f565469e3ac7f00eba48c54e70096c7722cfd5d7cf67e355cd739

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1239886335696ea4e7b21c7a563e3a7263a8c5cfdd355807fecf1e1ae90dc7df",
    "cross_cats_sorted": [
      "cs.CG",
      "math.CO",
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-02-17T12:42:46Z",
    "title_canon_sha256": "7f6b9341b1a23e693809fdc63d9648918646f9c1960786eedab74c97d1a39fd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04873",
    "kind": "arxiv",
    "version": 1
  }
}