Pith Number

pith:5BMYZNQ6

pith:2014:5BMYZNQ6IX6W7OWLK7JRSZCQL3

not attested not anchored not stored refs pending

Hedetniemi's Conjecture Via Altermatic Number

Hossein Hajiabolhassan, Meysam Alishahi

arxiv:1403.4404 v5 · 2014-03-18 · 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{5BMYZNQ6IX6W7OWLK7JRSZCQL3}

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	2026-05-18T01:10:15.403047Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8598cb61e45fd6fbacb57d31964505ed8d85e0848dc7690caf0bfe3ae819605

Aliases

arxiv: 1403.4404 · arxiv_version: 1403.4404v5 · doi: 10.48550/arxiv.1403.4404 · pith_short_12: 5BMYZNQ6IX6W · pith_short_16: 5BMYZNQ6IX6W7OWL · pith_short_8: 5BMYZNQ6

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/5BMYZNQ6IX6W7OWLK7JRSZCQL3 \
  | 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: e8598cb61e45fd6fbacb57d31964505ed8d85e0848dc7690caf0bfe3ae819605

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb367494b201efe82bc308d681d41cb847b69f672d52fa481cc9eb69e94c6143",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-03-18T11:04:57Z",
    "title_canon_sha256": "40339de60bb3d7fc5c8c7f9e0d97d037619ea8e94d8c04d1cd8722dd2857e643"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4404",
    "kind": "arxiv",
    "version": 5
  }
}