Pith Number

pith:VGR7PMSZ

pith:2018:VGR7PMSZBKBXW2XWCQLJ2STKAL

not attested not anchored not stored refs pending

A note on hypergraph colorings

Yandong Bai

arxiv:1808.03888 v1 · 2018-08-12 · 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{VGR7PMSZBKBXW2XWCQLJ2STKAL}

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	2026-05-18T00:08:19.424056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9a3f7b2590a837b6af614169d4a6a02e4794026a202837c8b384d21ad2a4157

Aliases

arxiv: 1808.03888 · arxiv_version: 1808.03888v1 · doi: 10.48550/arxiv.1808.03888 · pith_short_12: VGR7PMSZBKBX · pith_short_16: VGR7PMSZBKBXW2XW · pith_short_8: VGR7PMSZ

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/VGR7PMSZBKBXW2XWCQLJ2STKAL \
  | 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: a9a3f7b2590a837b6af614169d4a6a02e4794026a202837c8b384d21ad2a4157

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2c17d2f7d4c01416912828785695800f31153bab7d4ed5e25d7f2800b4dcb0d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-08-12T04:11:15Z",
    "title_canon_sha256": "cc18a219cbfa078ae725c284d79f9d727c064a000e5cab9f98f4aa95558860df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.03888",
    "kind": "arxiv",
    "version": 1
  }
}