Pith Number

pith:AP2LMQBB

pith:2013:AP2LMQBBVAJAU4E4GO3W2DAMBG

not attested not anchored not stored refs pending

The predecessor-existence problem for k-reversible processes

F\'abio Protti, Leonardo I. L. Oliveira, Valmir C. Barbosa

arxiv:1307.7259 v1 · 2013-07-27 · cs.DS · nlin.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AP2LMQBBVAJAU4E4GO3W2DAMBG}

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	2026-05-18T02:32:39.060200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03f4b64021a8120a709c33b76d0c0c09adff05cde1de7364bb5f2e739358a721

Aliases

arxiv: 1307.7259 · arxiv_version: 1307.7259v1 · doi: 10.48550/arxiv.1307.7259 · pith_short_12: AP2LMQBBVAJA · pith_short_16: AP2LMQBBVAJAU4E4 · pith_short_8: AP2LMQBB

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/AP2LMQBBVAJAU4E4GO3W2DAMBG \
  | 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: 03f4b64021a8120a709c33b76d0c0c09adff05cde1de7364bb5f2e739358a721

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "045ffb6ada1037f46564430c1b4de93e47325474ef03e2a332c7f4350c2e9448",
    "cross_cats_sorted": [
      "nlin.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-07-27T13:31:08Z",
    "title_canon_sha256": "cc5dc0aa2ba16c0e54d871c73f5fd9d897e21781c33a3d35470b75dc42727527"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7259",
    "kind": "arxiv",
    "version": 1
  }
}