Pith Number

pith:NH2J36HY

pith:2017:NH2J36HYUWYKQ2EH6XBVUD3VJE

not attested not anchored not stored refs pending

Finite Inverse Categories as Signatures

Dimitris Tsementzis, Matthew Weaver

arxiv:1707.07339 v1 · 2017-07-23 · math.LO · cs.LO · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NH2J36HYUWYKQ2EH6XBVUD3VJE}

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	2026-05-18T00:39:42.504619Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69f49df8f8a5b0a86887f5c35a0f75493981ec92b6ad97f3c9abbfee6260d3f3

Aliases

arxiv: 1707.07339 · arxiv_version: 1707.07339v1 · doi: 10.48550/arxiv.1707.07339 · pith_short_12: NH2J36HYUWYK · pith_short_16: NH2J36HYUWYKQ2EH · pith_short_8: NH2J36HY

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/NH2J36HYUWYKQ2EH6XBVUD3VJE \
  | 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: 69f49df8f8a5b0a86887f5c35a0f75493981ec92b6ad97f3c9abbfee6260d3f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da26141c9916159cd19e003fd4e8c5d0cc3098e598d7a61a60cebcd2e04134f5",
    "cross_cats_sorted": [
      "cs.LO",
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-07-23T20:14:35Z",
    "title_canon_sha256": "15cb2c9fdf9957a8916a1c1da0ed1e9526c7d38aefe5096c5f88faf7fc47b01d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.07339",
    "kind": "arxiv",
    "version": 1
  }
}