Pith Number

pith:64PVPOBY

pith:2011:64PVPOBYCE6P7MQ2BZZIZ2GRCF

not attested not anchored not stored refs pending

Interleaved computation for persistent homology

Mikael Vejdemo-Johansson

arxiv:1105.6305 v1 · 2011-05-31 · 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{64PVPOBYCE6P7MQ2BZZIZ2GRCF}

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	2026-05-18T04:20:59.760397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f71f57b838113cffb21a0e728ce8d11156d6541fef4415a687baa781efb652c0

Aliases

arxiv: 1105.6305 · arxiv_version: 1105.6305v1 · doi: 10.48550/arxiv.1105.6305 · pith_short_12: 64PVPOBYCE6P · pith_short_16: 64PVPOBYCE6P7MQ2 · pith_short_8: 64PVPOBY

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/64PVPOBYCE6P7MQ2BZZIZ2GRCF \
  | 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: f71f57b838113cffb21a0e728ce8d11156d6541fef4415a687baa781efb652c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54f6c36d9602b48ab640085ebfb2e216047ebf662d0edfd16f30b41cfd475474",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2011-05-31T14:42:58Z",
    "title_canon_sha256": "e955e1b9ed3b853b709da708e7d27fb538073b2a993b5238a75f512db88ee6b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.6305",
    "kind": "arxiv",
    "version": 1
  }
}