Pith Number

pith:D2WMYFMC

pith:2016:D2WMYFMCCSFP7QLTTIPRG5HZZK

not attested not anchored not stored refs pending

Linear Programming Heuristics for the Graph Isomorphism Problem

Reza Takapoui, Stephen Boyd

arxiv:1611.00711 v1 · 2016-11-02 · math.OC · cs.DS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D2WMYFMCCSFP7QLTTIPRG5HZZK}

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	2026-05-18T01:00:25.106539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1eaccc1582148affc1739a1f1374f9ca8fb58b02103adfb1c5aa518c535cfcc4

Aliases

arxiv: 1611.00711 · arxiv_version: 1611.00711v1 · doi: 10.48550/arxiv.1611.00711 · pith_short_12: D2WMYFMCCSFP · pith_short_16: D2WMYFMCCSFP7QLT · pith_short_8: D2WMYFMC

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/D2WMYFMCCSFP7QLTTIPRG5HZZK \
  | 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: 1eaccc1582148affc1739a1f1374f9ca8fb58b02103adfb1c5aa518c535cfcc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc88b5756bd994ccde27890e330ac37c9492716ee124484b57b6b7a50969600e",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-11-02T18:24:40Z",
    "title_canon_sha256": "780d757143cd3f961bc92aa6177836aa2836fba3bdb0ed429a5b17aeb036a42d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.00711",
    "kind": "arxiv",
    "version": 1
  }
}