Pith Number

pith:TXHDFHYP

pith:2009:TXHDFHYP35N732RTK6PK2TMBB6

not attested not anchored not stored refs pending

Coherence for rewriting 2-theories

Jonathan Asher Cohen

arxiv:0904.0125 v1 · 2009-04-01 · math.CT · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TXHDFHYP35N732RTK6PK2TMBB6}

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	2026-07-04T15:40:34.071015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dce329f0fdf5bfdea33579ead4d810f9b734e3f7407e0002da484563d04f712

Aliases

arxiv: 0904.0125 · arxiv_version: 0904.0125v1 · doi: 10.48550/arxiv.0904.0125 · pith_short_12: TXHDFHYP35N7 · pith_short_16: TXHDFHYP35N732RT · pith_short_8: TXHDFHYP

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/TXHDFHYP35N732RTK6PK2TMBB6 \
  | 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: 9dce329f0fdf5bfdea33579ead4d810f9b734e3f7407e0002da484563d04f712

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a84d5bbb55808e49fb9c0597f8db8f9ff82a2c28f994a6eb18a8e0a68332782b",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2009-04-01T12:59:15Z",
    "title_canon_sha256": "9c423ff4a605a7028700e78b2c7a4b99cd467b5879e5651e49dc253ebed0a8a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0125",
    "kind": "arxiv",
    "version": 1
  }
}