Pith Number

pith:5YMXDVJ6

pith:2008:5YMXDVJ6G5LPKQP5YITWXWFQJZ

not attested not anchored not stored refs pending

Relational Parametricity and Separation Logic

Hongseok Yang, Lars Birkedal

arxiv:0805.0783 v2 · 2008-05-06 · 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{5YMXDVJ6G5LPKQP5YITWXWFQJZ}

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	2026-05-18T01:37:42.465509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee1971d53e3756f541fdc2276bd8b04e6365fbd7f5146817013ada904a66bba3

Aliases

arxiv: 0805.0783 · arxiv_version: 0805.0783v2 · doi: 10.48550/arxiv.0805.0783 · pith_short_12: 5YMXDVJ6G5LP · pith_short_16: 5YMXDVJ6G5LPKQP5 · pith_short_8: 5YMXDVJ6

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/5YMXDVJ6G5LPKQP5YITWXWFQJZ \
  | 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: ee1971d53e3756f541fdc2276bd8b04e6365fbd7f5146817013ada904a66bba3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "044b8fae7ff66006185a721ef96ed945022406138035547700a9dbf3890154ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2008-05-06T19:27:14Z",
    "title_canon_sha256": "eb36cfee66445766ce8020d84784c0d90abb897b0e3a85a059f4523808ce5394"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.0783",
    "kind": "arxiv",
    "version": 2
  }
}