Pith Number

pith:MD42A77S

pith:2011:MD42A77SMLZCLE3BUXEV3OPOZW

not attested not anchored not stored refs pending

Graph colorings, flows and arithmetic Tutte polynomial

Luca Moci, Michele D'Adderio

arxiv:1108.5537 v1 · 2011-08-29 · 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{MD42A77SMLZCLE3BUXEV3OPOZW}

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	2026-05-18T04:14:37.280264Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60f9a07ff262f2259361a5c95db9eecd8568b58236ee509501b1108c1f9a3573

Aliases

arxiv: 1108.5537 · arxiv_version: 1108.5537v1 · doi: 10.48550/arxiv.1108.5537 · pith_short_12: MD42A77SMLZC · pith_short_16: MD42A77SMLZCLE3B · pith_short_8: MD42A77S

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/MD42A77SMLZCLE3BUXEV3OPOZW \
  | 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: 60f9a07ff262f2259361a5c95db9eecd8568b58236ee509501b1108c1f9a3573

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "789ecb9e1ce9d9ce0ae8fb7727b828e677c4c51fa0efd1a77b3dc6fd8ef1591b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-08-29T13:59:14Z",
    "title_canon_sha256": "5c05827bc9f286572c24d0142f972d7600a9482fbb4163d59e85171bfaf1fe5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5537",
    "kind": "arxiv",
    "version": 1
  }
}