Pith Number

pith:DQV5SBRU

pith:2019:DQV5SBRU2BIRC3QIL2XWDVVP2E

not attested not anchored not stored refs pending

The counting matrix of a simplicial complex

Oliver Knill

arxiv:1907.09092 v1 · 2019-07-22 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DQV5SBRU2BIRC3QIL2XWDVVP2E}

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	2026-05-17T23:40:00.208655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c2bd90634d051116e085eaf61d6afd11bef3f9283740887c2d7f5353dbebeef

Aliases

arxiv: 1907.09092 · arxiv_version: 1907.09092v1 · doi: 10.48550/arxiv.1907.09092 · pith_short_12: DQV5SBRU2BIR · pith_short_16: DQV5SBRU2BIRC3QI · pith_short_8: DQV5SBRU

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/DQV5SBRU2BIRC3QIL2XWDVVP2E \
  | 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: 1c2bd90634d051116e085eaf61d6afd11bef3f9283740887c2d7f5353dbebeef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45857ed556197ed9f0adc6768c2fa29fb008fa68124f145b6cb7b55098b8bd77",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-07-22T02:49:25Z",
    "title_canon_sha256": "6a3248919b277f4057c84ed21fe07cd63b7f7e1e416f7374a6f0e75ccdeb477b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.09092",
    "kind": "arxiv",
    "version": 1
  }
}