Pith Number

pith:X3AHMYGT

pith:2008:X3AHMYGTOKYDTBD5WXSE2ND34L

not attested not anchored not stored refs pending

Pivots, Determinants, and Perfect Matchings of Graphs

Hendrik Jan Hoogeboom, Robert Brijder, Tero Harju

arxiv:0811.3500 v1 · 2008-11-21 · 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{X3AHMYGTOKYDTBD5WXSE2ND34L}

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	2026-05-18T03:40:26.019497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bec07660d372b039847db5e44d347be2ef7457be777b431dc30f4580dcda446e

Aliases

arxiv: 0811.3500 · arxiv_version: 0811.3500v1 · doi: 10.48550/arxiv.0811.3500 · pith_short_12: X3AHMYGTOKYD · pith_short_16: X3AHMYGTOKYDTBD5 · pith_short_8: X3AHMYGT

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/X3AHMYGTOKYDTBD5WXSE2ND34L \
  | 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: bec07660d372b039847db5e44d347be2ef7457be777b431dc30f4580dcda446e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c431c00e602132203a52f810ff7735164c26c742342e8e36ccb5eeb96fbd93b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-11-21T15:18:33Z",
    "title_canon_sha256": "5fd0f26aaac833aef604e33e8d6c49db09f54e1b74dbd4a2ba9bfdf378ef2396"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0811.3500",
    "kind": "arxiv",
    "version": 1
  }
}