Pith Number

pith:U7P245RM

pith:2011:U7P245RMGSM72JXKQXBJ4GXMMS

not attested not anchored not stored refs pending

Nested Hoare Triples and Frame Rules for Higher-order Store

Bernhard Reus (University of Sussex), Hongseok Yang (University of Oxford), Jan Schwinghammer (Saarland University), Lars Birkedal (IT University of Copenhagen)

arxiv:1109.3031 v2 · 2011-09-14 · 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{U7P245RMGSM72JXKQXBJ4GXMMS}

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	2026-05-18T01:37:39.249461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7dfae762c3499fd26ea85c29e1aec648653bf757ffed90393228d73e21158ab

Aliases

arxiv: 1109.3031 · arxiv_version: 1109.3031v2 · doi: 10.48550/arxiv.1109.3031 · pith_short_12: U7P245RMGSM7 · pith_short_16: U7P245RMGSM72JXK · pith_short_8: U7P245RM

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/U7P245RMGSM72JXKQXBJ4GXMMS \
  | 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: a7dfae762c3499fd26ea85c29e1aec648653bf757ffed90393228d73e21158ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19d7f60a206149ba7aaad0ac1477485e8b866d085f578b3bdb3625d1faaccb85",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-09-14T09:24:06Z",
    "title_canon_sha256": "e2df6e4ea3ebbb7289777b0e1afd0b75ed04c02d81c7d845a28e206d8c99ee47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3031",
    "kind": "arxiv",
    "version": 2
  }
}