Pith Number

pith:HGPWEXQZ

pith:2015:HGPWEXQZX3IEH6G4RGYAOZN2HT

not attested not anchored not stored refs pending

Syntactic Monoids in a Category

Henning Urbat, Jiri Adamek, Stefan Milius

arxiv:1504.02694 v2 · 2015-04-10 · cs.LO · cs.FL · 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{HGPWEXQZX3IEH6G4RGYAOZN2HT}

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	2026-05-18T01:48:06.202957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

399f625e19bed043f8dc89b00765ba3cfc8ed9dd65641730c23a62cc03d986f4

Aliases

arxiv: 1504.02694 · arxiv_version: 1504.02694v2 · doi: 10.48550/arxiv.1504.02694 · pith_short_12: HGPWEXQZX3IE · pith_short_16: HGPWEXQZX3IEH6G4 · pith_short_8: HGPWEXQZ

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/HGPWEXQZX3IEH6G4RGYAOZN2HT \
  | 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: 399f625e19bed043f8dc89b00765ba3cfc8ed9dd65641730c23a62cc03d986f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a48843ce2a6b4263052a18f696fe447a61e8dfa6cffa9891280cb0ed71e95137",
    "cross_cats_sorted": [
      "cs.FL",
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-04-10T14:44:26Z",
    "title_canon_sha256": "65b205594d3f5fb780735d871a06d23fea5d81f264d90679b0f8342804ab35f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02694",
    "kind": "arxiv",
    "version": 2
  }
}