Pith Number

pith:NPJ2WLQ4

pith:2012:NPJ2WLQ4N3FVHRV23HS5PRW5WP

not attested not anchored not stored refs pending

A superlocal version of Reed's Conjecture

Andrew D. King, Katherine Edwards

arxiv:1208.5188 v2 · 2012-08-26 · cs.DM · 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{NPJ2WLQ4N3FVHRV23HS5PRW5WP}

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	2026-05-18T02:35:52.650547Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bd3ab2e1c6ecb53c6bad9e5d7c6ddb3ec7546a197ab2f5773dce8967c3ba0b8

Aliases

arxiv: 1208.5188 · arxiv_version: 1208.5188v2 · doi: 10.48550/arxiv.1208.5188 · pith_short_12: NPJ2WLQ4N3FV · pith_short_16: NPJ2WLQ4N3FVHRV2 · pith_short_8: NPJ2WLQ4

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/NPJ2WLQ4N3FVHRV23HS5PRW5WP \
  | 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: 6bd3ab2e1c6ecb53c6bad9e5d7c6ddb3ec7546a197ab2f5773dce8967c3ba0b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63b29bde5de02c0a4fc0c8c219a94607075a4fb9d6539d958ba633acda666968",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-08-26T04:01:31Z",
    "title_canon_sha256": "c9d163e74f567295f985136e41f1258ed16179fe624c0aaeded4e1209a557f8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.5188",
    "kind": "arxiv",
    "version": 2
  }
}