Pith Number

pith:K67ZUPJA

pith:2015:K67ZUPJAK3LPX5KPLQ7R72UQNO

not attested not anchored not stored refs pending

Rainbow matchings and algebras of sets

Eran Omri, Gabriel Nivasch

arxiv:1503.03671 v3 · 2015-03-12 · math.CO · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K67ZUPJAK3LPX5KPLQ7R72UQNO}

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	2026-05-18T00:49:52.731093Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57bf9a3d2056d6fbf54f5c3f1fea906b914f5adc9d5ef4075428358edf3fee8c

Aliases

arxiv: 1503.03671 · arxiv_version: 1503.03671v3 · doi: 10.48550/arxiv.1503.03671 · pith_short_12: K67ZUPJAK3LP · pith_short_16: K67ZUPJAK3LPX5KP · pith_short_8: K67ZUPJA

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/K67ZUPJAK3LPX5KPLQ7R72UQNO \
  | 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: 57bf9a3d2056d6fbf54f5c3f1fea906b914f5adc9d5ef4075428358edf3fee8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76529294378abc0fece9466b47240d9444edf4b82a5b0793d084725074462c8a",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-03-12T11:08:15Z",
    "title_canon_sha256": "dabecd453df4fbacd49d3ef6e2f12c9cd4c2cda9c8d8f97a8c8b6cad2a560ff8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03671",
    "kind": "arxiv",
    "version": 3
  }
}