Pith Number

pith:FAOD6V4Y

pith:2018:FAOD6V4YMXZ6CZXI3YLZ5BPAKF

not attested not anchored not stored refs pending

A Tableaux Calculus for Reducing Proof Size

Michael Peter Lettmann, Nicolas Peltier

arxiv:1801.04163 v1 · 2018-01-12 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FAOD6V4YMXZ6CZXI3YLZ5BPAKF}

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	2026-05-18T00:26:09.627685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

281c3f579865f3e166e8de179e85e05146ddf9e121cac3d37dabb9802fda80bc

Aliases

arxiv: 1801.04163 · arxiv_version: 1801.04163v1 · doi: 10.48550/arxiv.1801.04163 · pith_short_12: FAOD6V4YMXZ6 · pith_short_16: FAOD6V4YMXZ6CZXI · pith_short_8: FAOD6V4Y

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/FAOD6V4YMXZ6CZXI3YLZ5BPAKF \
  | 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: 281c3f579865f3e166e8de179e85e05146ddf9e121cac3d37dabb9802fda80bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52a801c1a38534d40eb1834a5fd4df4d39303b4c102ddfe9fb4b1edf46a93d1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-01-12T13:39:46Z",
    "title_canon_sha256": "165a2917ec4a6badfd9e9fe39b7a2e9f41ec64d51db77effdf8f64c9a292405e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04163",
    "kind": "arxiv",
    "version": 1
  }
}