Pith Number

pith:RKM2B2OL

pith:2015:RKM2B2OL7VCKBY44OZNRDEVAJK

not attested not anchored not stored refs pending

Unitary graphs

Sanming Zhou

arxiv:1503.06920 v1 · 2015-03-24 · 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{RKM2B2OL7VCKBY44OZNRDEVAJK}

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	2026-05-18T02:20:29.784450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a99a0e9cbfd44a0e39c765b1192a04a9934179ebbde4ce641879ea1dee7bfdd

Aliases

arxiv: 1503.06920 · arxiv_version: 1503.06920v1 · doi: 10.48550/arxiv.1503.06920 · pith_short_12: RKM2B2OL7VCK · pith_short_16: RKM2B2OL7VCKBY44 · pith_short_8: RKM2B2OL

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/RKM2B2OL7VCKBY44OZNRDEVAJK \
  | 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: 8a99a0e9cbfd44a0e39c765b1192a04a9934179ebbde4ce641879ea1dee7bfdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86fc6b85f33916dffdb6c0c8808ce661ff7712fa370702e7966d60e4c0163de0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-03-24T05:52:41Z",
    "title_canon_sha256": "5e1b7aeffd89cbbc6408fbfc4619297edbeee65a0247dc509f57bf02270f93b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06920",
    "kind": "arxiv",
    "version": 1
  }
}