Pith Number

pith:GPYOBAIH

pith:2015:GPYOBAIHLZ4PHGOBWUCMMCEUUI

not attested not anchored not stored refs pending

An algebraic proof of the Erd\H{o}s-Ko-Rado theorem for intersecting families of perfect matchings

Chris Godsil, Karen Meagher

arxiv:1506.08770 v1 · 2015-06-29 · 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{GPYOBAIHLZ4PHGOBWUCMMCEUUI}

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	2026-05-18T01:37:43.456721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33f0e081075e78f399c1b504c60894a236e8b68eed142a2f2f0370c2871c0f0e

Aliases

arxiv: 1506.08770 · arxiv_version: 1506.08770v1 · doi: 10.48550/arxiv.1506.08770 · pith_short_12: GPYOBAIHLZ4P · pith_short_16: GPYOBAIHLZ4PHGOB · pith_short_8: GPYOBAIH

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/GPYOBAIHLZ4PHGOBWUCMMCEUUI \
  | 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: 33f0e081075e78f399c1b504c60894a236e8b68eed142a2f2f0370c2871c0f0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aff2841e7860559ddbabbfede9d063172fee3f22aa5a86ce923bd7fd901446da",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-06-29T18:35:01Z",
    "title_canon_sha256": "a4f45493ed108ce5759e13e5744f60f4bc58e16098d0db45f83fcb13b9a981ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08770",
    "kind": "arxiv",
    "version": 1
  }
}