Pith Number

pith:O3SN5LU5

pith:2011:O3SN5LU5FKXLT3AR74XDJZQ7U6

not attested not anchored not stored refs pending

A Logic with Reverse Modalities for History-preserving Bisimulations

Iain Phillips (Imperial College London), Irek Ulidowski (University of Leicester)

arxiv:1108.4470 v1 · 2011-08-23 · 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{O3SN5LU5FKXLT3AR74XDJZQ7U6}

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	2026-05-18T04:14:54.526933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76e4deae9d2aaeb9ec11ff2e34e61fa787829bf4fdf7ac1c3fd23301959d440f

Aliases

arxiv: 1108.4470 · arxiv_version: 1108.4470v1 · doi: 10.48550/arxiv.1108.4470 · pith_short_12: O3SN5LU5FKXL · pith_short_16: O3SN5LU5FKXLT3AR · pith_short_8: O3SN5LU5

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/O3SN5LU5FKXLT3AR74XDJZQ7U6 \
  | 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: 76e4deae9d2aaeb9ec11ff2e34e61fa787829bf4fdf7ac1c3fd23301959d440f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5300335cbe0a8db788ac89f905dbbed928598429dd74c7509dafa239cb1082a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-08-23T01:23:54Z",
    "title_canon_sha256": "a787ca52327c598431510e2c24c3dfe0d9886ff1cdd3fffb7b92bafd3fd00aee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4470",
    "kind": "arxiv",
    "version": 1
  }
}