Pith Number

pith:YVFX65EU

pith:2015:YVFX65EUV55Z2S2JTRQXUD3ZEA

not attested not anchored not stored refs pending

Erd\H{o}s-Ko-Rado Theorems for a Family of Trees

Carl Feghali, Daniel Thomas, Matthew Johnson

arxiv:1506.07741 v2 · 2015-06-25 · 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{YVFX65EUV55Z2S2JTRQXUD3ZEA}

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	2026-05-18T01:17:11.659678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c54b7f7494af7b9d4b499c617a0f7920380e2118694cccaf8e04074e0611f189

Aliases

arxiv: 1506.07741 · arxiv_version: 1506.07741v2 · doi: 10.48550/arxiv.1506.07741 · pith_short_12: YVFX65EUV55Z · pith_short_16: YVFX65EUV55Z2S2J · pith_short_8: YVFX65EU

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/YVFX65EUV55Z2S2JTRQXUD3ZEA \
  | 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: c54b7f7494af7b9d4b499c617a0f7920380e2118694cccaf8e04074e0611f189

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4da865c3721c3056a29ecde2acd7a18b6f5398769c692aaa1f92838270811dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-06-25T13:21:14Z",
    "title_canon_sha256": "468468d1f8d0eba27c9f6b14d6b366592c7873c2635ef91cc338bdb1a564af92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.07741",
    "kind": "arxiv",
    "version": 2
  }
}