Pith Number

pith:UDELSTSJ

pith:2014:UDELSTSJ5FFLYJZD73V6455XER

not attested not anchored not stored refs pending

On surjunctive monoids

Michel Coornaert, Tullio Ceccherini-Silberstein

arxiv:1409.1340 v1 · 2014-09-04 · math.DS · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UDELSTSJ5FFLYJZD73V6455XER}

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	2026-05-18T01:34:35.529949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0c8b94e49e94abc2723feebee77b7247c564262e757754066eff872969a7221

Aliases

arxiv: 1409.1340 · arxiv_version: 1409.1340v1 · doi: 10.48550/arxiv.1409.1340 · pith_short_12: UDELSTSJ5FFL · pith_short_16: UDELSTSJ5FFLYJZD · pith_short_8: UDELSTSJ

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/UDELSTSJ5FFLYJZD73V6455XER \
  | 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: a0c8b94e49e94abc2723feebee77b7247c564262e757754066eff872969a7221

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e543157fce52f989105b4b26ca7782aa527c2f9717d3749eaf1f51c30b15b433",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2014-09-04T06:55:03Z",
    "title_canon_sha256": "c2017d41954e8e4145110fd7b7f3da56ee84d844d618b133731c91458eed9fa0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1340",
    "kind": "arxiv",
    "version": 1
  }
}