Pith Number

pith:7VMHTIJE

pith:2009:7VMHTIJETAQ4PMLRMMJLLTJKV7

not attested not anchored not stored refs pending

Two-Way Unary Temporal Logic over Trees

Mikolaj Bojanczyk

arxiv:0904.4119 v2 · 2009-04-27 · 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{7VMHTIJETAQ4PMLRMMJLLTJKV7}

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.

Cited by

1 paper in Pith

Deciding the Common Fragment of CTL with Past and LTL

Receipt and verification

First computed	2026-05-18T01:37:40.428491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd5879a1249821c7b1716312b5cd2aaff9249522e9c1a8724266a9b22f961c84

Aliases

arxiv: 0904.4119 · arxiv_version: 0904.4119v2 · doi: 10.48550/arxiv.0904.4119 · pith_short_12: 7VMHTIJETAQ4 · pith_short_16: 7VMHTIJETAQ4PMLR · pith_short_8: 7VMHTIJE

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/7VMHTIJETAQ4PMLRMMJLLTJKV7 \
  | 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: fd5879a1249821c7b1716312b5cd2aaff9249522e9c1a8724266a9b22f961c84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77a6289ac0ebeb4d3a46de58fb6232c296ac368260dd927ba5b71341d669237a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2009-04-27T09:33:44Z",
    "title_canon_sha256": "e1afc99c81ac0795f1d424c1eb077c44dd91a376fbd6dae9a60a07dfcbfb2b7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.4119",
    "kind": "arxiv",
    "version": 2
  }
}