Pith Number

pith:TRAXTRO4

pith:2014:TRAXTRO4NOQOIZME3YR7PASTNB

not attested not anchored not stored refs pending

Erd\H{o}s-Ko-Rado for Perfect Matchings

Nathan Lindzey

arxiv:1409.2057 v1 · 2014-09-06 · 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{TRAXTRO4NOQOIZME3YR7PASTNB}

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	2026-05-18T02:43:18.018498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c4179c5dc6ba0e46584de23f78253684829879a2d64298b67d0a0392829153e

Aliases

arxiv: 1409.2057 · arxiv_version: 1409.2057v1 · doi: 10.48550/arxiv.1409.2057 · pith_short_12: TRAXTRO4NOQO · pith_short_16: TRAXTRO4NOQOIZME · pith_short_8: TRAXTRO4

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/TRAXTRO4NOQOIZME3YR7PASTNB \
  | 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: 9c4179c5dc6ba0e46584de23f78253684829879a2d64298b67d0a0392829153e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b17182d2bf73543f8f3f2bf56ab502e57c0a74c9f7ef075de6168bedfed164d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-09-06T20:54:21Z",
    "title_canon_sha256": "606097ceec42587c5af269c9a2664488cc0e8dcb1e21a2222d8274c07fbf5244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2057",
    "kind": "arxiv",
    "version": 1
  }
}