Pith Number

pith:FF65ICOX

pith:2013:FF65ICOXJNWSA27DNPUV5TVIXY

not attested not anchored not stored refs pending

On k-wise intersecting families of vertex sets in perfect matchings

Vikram Kamat

arxiv:1304.0242 v1 · 2013-03-31 · 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{FF65ICOXJNWSA27DNPUV5TVIXY}

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	2026-05-18T03:29:17.569137Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

297dd409d74b6d206be36be95ecea8be3037671cfdd4213c70c5a501d502c650

Aliases

arxiv: 1304.0242 · arxiv_version: 1304.0242v1 · doi: 10.48550/arxiv.1304.0242 · pith_short_12: FF65ICOXJNWS · pith_short_16: FF65ICOXJNWSA27D · pith_short_8: FF65ICOX

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/FF65ICOXJNWSA27DNPUV5TVIXY \
  | 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: 297dd409d74b6d206be36be95ecea8be3037671cfdd4213c70c5a501d502c650

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f691ecb356ca1ad978009e66af9f1e3f20fe897cba96dac5b3ec3b7744dea7d5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-03-31T18:41:41Z",
    "title_canon_sha256": "2fc1c101b48d1d8224305521699d351cdaa8404589a7b16069f6d60f362685c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.0242",
    "kind": "arxiv",
    "version": 1
  }
}