Pith Number

pith:76WDPIRV

pith:2025:76WDPIRV6VWYP4U3OSNSPU35NO

not attested not anchored not stored refs pending

Almost-perfect colorful matchings in three-edge-colored bipartite graphs

Micha Christoph, Simona Boyadzhiyska, Tibor Szab\'o

arxiv:2504.15167 v2 · 2025-04-21 · 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{76WDPIRV6VWYP4U3OSNSPU35NO}

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	2026-07-05T11:44:47.998330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffac37a235f56d87f29b749b27d37d6bb4368bb9ed533eb64044cf0be0cb971b

Aliases

arxiv: 2504.15167 · arxiv_version: 2504.15167v2 · doi: 10.48550/arxiv.2504.15167 · pith_short_12: 76WDPIRV6VWY · pith_short_16: 76WDPIRV6VWYP4U3 · pith_short_8: 76WDPIRV

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/76WDPIRV6VWYP4U3OSNSPU35NO \
  | 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: ffac37a235f56d87f29b749b27d37d6bb4368bb9ed533eb64044cf0be0cb971b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0d6fed0c04bfe8776906656ea3d2b91f6f52df8c3bdd22a174bb3d75a3a7c02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-04-21T15:22:13Z",
    "title_canon_sha256": "650c38340fdb7249d402355180da9ad3f53b60fe421b6f4fb1e6bd2492817571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.15167",
    "kind": "arxiv",
    "version": 2
  }
}