Pith Number

pith:UWZZPFTS

pith:2020:UWZZPFTSVBSD2WKVIB6QZLVV22

not attested not anchored not stored refs pending

Graph isomorphism: Physical resources, optimization models, and algebraic characterizations

Antonios Varvitsiotis, David E. Roberson, Laura Man\v{c}inska

arxiv:2004.10893 v1 · 2020-04-22 · 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{UWZZPFTSVBSD2WKVIB6QZLVV22}

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.

Cited by

1 paper in Pith

Group Invariant Quantum Latin Squares

Receipt and verification

First computed	2026-07-05T00:57:37.063645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5b3979672a8643d5955407d0caeb5d68848072ba2d3906bf240b4471082ea42

Aliases

arxiv: 2004.10893 · arxiv_version: 2004.10893v1 · doi: 10.48550/arxiv.2004.10893 · pith_short_12: UWZZPFTSVBSD · pith_short_16: UWZZPFTSVBSD2WKV · pith_short_8: UWZZPFTS

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/UWZZPFTSVBSD2WKVIB6QZLVV22 \
  | 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: a5b3979672a8643d5955407d0caeb5d68848072ba2d3906bf240b4471082ea42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d70824f646148caa1bd10dbc963c178f3b77d62d3ae03ac1c7aabad2cec422fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2020-04-22T23:13:53Z",
    "title_canon_sha256": "64007ceb43949000fea1427e94dd9a20e33f2b6fa5b69e6c61c1d84de2822520"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.10893",
    "kind": "arxiv",
    "version": 1
  }
}