Pith Number

pith:6PCXEWAP

pith:2019:6PCXEWAPQ7M57ZPXSJH3DP4B6O

not attested not anchored not stored refs pending

A Non-wellfounded, Labelled Proof System for Propositional Dynamic Logic

Reuben N. S. Rowe, Simon Docherty

arxiv:1905.06143 v2 · 2019-05-15 · 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{6PCXEWAPQ7M57ZPXSJH3DP4B6O}

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	2026-05-17T23:45:57.658857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3c572580f87d9dfe5f7924fb1bf81f38e4676697e310faee4427f7e1fdf595a

Aliases

arxiv: 1905.06143 · arxiv_version: 1905.06143v2 · doi: 10.48550/arxiv.1905.06143 · pith_short_12: 6PCXEWAPQ7M5 · pith_short_16: 6PCXEWAPQ7M57ZPX · pith_short_8: 6PCXEWAP

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/6PCXEWAPQ7M57ZPXSJH3DP4B6O \
  | 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: f3c572580f87d9dfe5f7924fb1bf81f38e4676697e310faee4427f7e1fdf595a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f7976dbf02715fe723a4ea6ce1f53adaffa59504eea496489f5e214bd864135",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-05-15T12:50:15Z",
    "title_canon_sha256": "57eb7cabebe7810f1cb8d4704b5a9228f26e1b440b5fd119b26adb65888dfd66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06143",
    "kind": "arxiv",
    "version": 2
  }
}