Pith Number

pith:FNXQ23U4

pith:2013:FNXQ23U4ZZR2CHYLG6VBCVLD2Z

not attested not anchored not stored refs pending

Automatic Equivalence Proofs for Non-deterministic Coalgebras

Alexandra Silva, Dorel Lucanu, Eugen-Ioan Goriac, Georgiana Caltais, Jan Rutten, Marcello Bonsangue

arxiv:1303.1994 v2 · 2013-03-08 · cs.LO · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FNXQ23U4ZZR2CHYLG6VBCVLD2Z}

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	2026-05-18T03:31:20.030826Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b6f0d6e9cce63a11f0b37aa115563d65378a7d641ba9c5f43484b7d23dadf91

Aliases

arxiv: 1303.1994 · arxiv_version: 1303.1994v2 · doi: 10.48550/arxiv.1303.1994 · pith_short_12: FNXQ23U4ZZR2 · pith_short_16: FNXQ23U4ZZR2CHYL · pith_short_8: FNXQ23U4

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/FNXQ23U4ZZR2CHYLG6VBCVLD2Z \
  | 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: 2b6f0d6e9cce63a11f0b37aa115563d65378a7d641ba9c5f43484b7d23dadf91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55679a25a845f52b7a7b874564d65b92f2fb3b2739484dac6ebb3375d6b98ce6",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-03-08T13:57:01Z",
    "title_canon_sha256": "e74f552c32f3e4c2faa6473a336d24165162a0be8146c27f9b2dc086b0152c28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1994",
    "kind": "arxiv",
    "version": 2
  }
}