Pith Number

pith:WQPBEQCD

pith:2026:WQPBEQCDVJWB5JPA3WFUICCRQ2

not attested not anchored not stored refs pending

On surjunctive and injunctive subshifts of finite type

Michel Coornaert, Tullio Ceccherini-Silberstein, Ville Salo

arxiv:2606.17757 v1 · 2026-06-16 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQPBEQCDVJWB5JPA3WFUICCRQ2}

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	2026-06-19T16:10:21.091380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b41e124043aa6c1ea5e0dd8b440851869c989fa17e1a13e60f49117cc2cee0af

Aliases

arxiv: 2606.17757 · arxiv_version: 2606.17757v1 · doi: 10.48550/arxiv.2606.17757 · pith_short_12: WQPBEQCDVJWB · pith_short_16: WQPBEQCDVJWB5JPA · pith_short_8: WQPBEQCD

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/WQPBEQCDVJWB5JPA3WFUICCRQ2 \
  | 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: b41e124043aa6c1ea5e0dd8b440851869c989fa17e1a13e60f49117cc2cee0af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a354b3bff26e1703558b912688300ad6610e67597f0ebcab98e7e901de0460e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2026-06-16T10:24:04Z",
    "title_canon_sha256": "6e046443b2b39929bea6791700924a25f3ea659119bf83ccb78334c24d15f3db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.17757",
    "kind": "arxiv",
    "version": 1
  }
}