Pith Number

pith:7QAG5PFF

pith:2012:7QAG5PFFNBEI5AFINAQ6TA24NF

not attested not anchored not stored refs pending

A Note on Combinatorial Derivation

Joshua Erde

arxiv:1210.7622 v2 · 2012-10-29 · math.CO · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7QAG5PFFNBEI5AFINAQ6TA24NF}

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	2026-05-18T02:41:42.826804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc006ebca568488e80a86821e9835c6974eb0a14740366a52d4b7e74d1981f59

Aliases

arxiv: 1210.7622 · arxiv_version: 1210.7622v2 · doi: 10.48550/arxiv.1210.7622 · pith_short_12: 7QAG5PFFNBEI · pith_short_16: 7QAG5PFFNBEI5AFI · pith_short_8: 7QAG5PFF

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/7QAG5PFFNBEI5AFINAQ6TA24NF \
  | 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: fc006ebca568488e80a86821e9835c6974eb0a14740366a52d4b7e74d1981f59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b5a5d9c778f581356f37b202aa1f3f886c915938414e01e04b0024a3b6f8784",
    "cross_cats_sorted": [
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-10-29T11:10:48Z",
    "title_canon_sha256": "1c2bfbf01713acd099065db60231bda9ef5d96efc4afec7b4386ac01c30bebca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7622",
    "kind": "arxiv",
    "version": 2
  }
}