Pith Number

pith:4NP266B7

pith:2011:4NP266B7MC3IZ5APFLDEBHVKJ7

not attested not anchored not stored refs pending

A spectral sequence for parallelized persistence

David Lipsky, Mikael Vejdemo-Johansson, Primoz Skraba

arxiv:1112.1245 v1 · 2011-12-06 · cs.CG · cs.DC · 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{4NP266B7MC3IZ5APFLDEBHVKJ7}

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	2026-05-18T02:21:27.862289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e35faf783f60b68cf40f2ac6409eaa4ffc77d3d72b20e677029f4d0cf0dcb7d3

Aliases

arxiv: 1112.1245 · arxiv_version: 1112.1245v1 · doi: 10.48550/arxiv.1112.1245 · pith_short_12: 4NP266B7MC3I · pith_short_16: 4NP266B7MC3IZ5AP · pith_short_8: 4NP266B7

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/4NP266B7MC3IZ5APFLDEBHVKJ7 \
  | 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: e35faf783f60b68cf40f2ac6409eaa4ffc77d3d72b20e677029f4d0cf0dcb7d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7211c4c300500b64904aea59ca5881c862fadea49ae925e41792afd97d7661b0",
    "cross_cats_sorted": [
      "cs.DC",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2011-12-06T12:01:16Z",
    "title_canon_sha256": "606921214cb3bef62bb83c68d43e21d335d9735cebd15bfdc1091ecba4b53afc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1245",
    "kind": "arxiv",
    "version": 1
  }
}