Pith Number

pith:UTDNN7DS

pith:2019:UTDNN7DS4W2IMLL7L7KIQQ7PGQ

not attested not anchored not stored refs pending

Normalization by Evaluation for Call-by-Push-Value and Polarized Lambda-Calculus

Andreas Abel, Christian Sattler

arxiv:1902.06097 v1 · 2019-02-16 · cs.PL · cs.LO · math.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{UTDNN7DS4W2IMLL7L7KIQQ7PGQ}

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	2026-05-17T23:53:40.943686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4c6d6fc72e5b4862d7f5fd48843ef3400313f7c83fc770a2718a2b839930020

Aliases

arxiv: 1902.06097 · arxiv_version: 1902.06097v1 · doi: 10.48550/arxiv.1902.06097 · pith_short_12: UTDNN7DS4W2I · pith_short_16: UTDNN7DS4W2IMLL7 · pith_short_8: UTDNN7DS

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/UTDNN7DS4W2IMLL7L7KIQQ7PGQ \
  | 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: a4c6d6fc72e5b4862d7f5fd48843ef3400313f7c83fc770a2718a2b839930020

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c09f8e7a2c745019079a6cce30b650e05991cf77810af3c726b8e0388520be4d",
    "cross_cats_sorted": [
      "cs.LO",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2019-02-16T12:26:22Z",
    "title_canon_sha256": "321db14d7bfe4649e4962f9cdcf9c427bb81165c5fccd5b2f8dc29262165007d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06097",
    "kind": "arxiv",
    "version": 1
  }
}