Pith Number

pith:SGI2WLND

pith:2009:SGI2WLNDJRRINJ6J66VUDAOBGI

not attested not anchored not stored refs pending

Applications of Metric Coinduction

Dexter Kozen, Nicholas Ruozzi

arxiv:0908.2793 v2 · 2009-08-19 · 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{SGI2WLNDJRRINJ6J66VUDAOBGI}

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	2026-05-18T01:37:40.301518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9191ab2da34c6286a7c9f7ab4181c13238125b60048706ba4b4e610e8f27d439

Aliases

arxiv: 0908.2793 · arxiv_version: 0908.2793v2 · doi: 10.48550/arxiv.0908.2793 · pith_short_12: SGI2WLNDJRRI · pith_short_16: SGI2WLNDJRRINJ6J · pith_short_8: SGI2WLND

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/SGI2WLNDJRRINJ6J66VUDAOBGI \
  | 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: 9191ab2da34c6286a7c9f7ab4181c13238125b60048706ba4b4e610e8f27d439

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45ac27a7f795b83a0769977c5ddcdd0c3641b32f9bd0efdcc9039b37cdfddd3e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2009-08-19T17:59:03Z",
    "title_canon_sha256": "8d04c3a910eddccfed69a21bf3b4cf386df86c8f55ad5e6f692905cb87578e2b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.2793",
    "kind": "arxiv",
    "version": 2
  }
}