Pith Number

pith:3SIJ23FV

pith:2019:3SIJ23FVBN64FDUCL2CARLYGLO

not attested not anchored not stored refs pending

Categorical Semantics for Time Travel

Bob Coecke, Nicola Pinzani, Stefano Gogioso

arxiv:1902.00032 v1 · 2019-01-31 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3SIJ23FVBN64FDUCL2CARLYGLO}

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

Supermaps on generalised theories

Receipt and verification

First computed	2026-05-17T23:54:58.408236Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc909d6cb50b7dc28e825e8408af065b8692adeed342c253bfd2e8734c71a0fe

Aliases

arxiv: 1902.00032 · arxiv_version: 1902.00032v1 · doi: 10.48550/arxiv.1902.00032 · pith_short_12: 3SIJ23FVBN64 · pith_short_16: 3SIJ23FVBN64FDUC · pith_short_8: 3SIJ23FV

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/3SIJ23FVBN64FDUCL2CARLYGLO \
  | 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: dc909d6cb50b7dc28e825e8408af065b8692adeed342c253bfd2e8734c71a0fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b656716b171659ed7c9b08113b3ab793a1c2d79d4007c9d1f18eae412e056bd8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2019-01-31T19:00:52Z",
    "title_canon_sha256": "ec30a2c0e6119feb641470b89351c02b9dcad0747031d36cba439c7b856e941a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00032",
    "kind": "arxiv",
    "version": 1
  }
}