Pith Number

pith:DEL2F75J

pith:2009:DEL2F75JFI7YQFUDR7RQPYQ52K

not attested not anchored not stored refs pending

A Faithful Semantics for Generalised Symbolic Trajectory Evaluation

Jan-Willem Roorda, Koen Claessen

arxiv:0901.2518 v2 · 2009-01-16 · 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{DEL2F75JFI7YQFUDR7RQPYQ52K}

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	2026-05-18T01:37:40.556674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1917a2ffa92a3f8816838fe307e21dd2b149bd93d2895808758a4be197ef2626

Aliases

arxiv: 0901.2518 · arxiv_version: 0901.2518v2 · doi: 10.48550/arxiv.0901.2518 · pith_short_12: DEL2F75JFI7Y · pith_short_16: DEL2F75JFI7YQFUD · pith_short_8: DEL2F75J

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/DEL2F75JFI7YQFUDR7RQPYQ52K \
  | 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: 1917a2ffa92a3f8816838fe307e21dd2b149bd93d2895808758a4be197ef2626

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1964bb13a1ff50f0db7a50f8c1bb1fb5405ba04216ab52d54356afe796e46864",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2009-01-16T16:14:48Z",
    "title_canon_sha256": "05455a19b3921a0df39af99925ebac8a2a900ae8d1cf809213375f392ad81720"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2518",
    "kind": "arxiv",
    "version": 2
  }
}