Pith Number

pith:MBEGK3W2

pith:2012:MBEGK3W2ABDQRZRH47XPIOB7IC

not attested not anchored not stored refs pending

Preservation of Strong Normalisation modulo permutations for the structural lambda-calculus

Beniamino Accattoli (LIPN (CNRS, CNRS), Delia Kesner (PPS, Inria, LIX (Ecole Polytechnique)), Universite Paris-Diderot, Universite Paris-Nord)

arxiv:1203.0670 v2 · 2012-03-03 · 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{MBEGK3W2ABDQRZRH47XPIOB7IC}

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	2026-05-18T01:37:38.960787Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6048656eda004708e627e7eef4383f40995b1131b747093a501df8e20f30b21d

Aliases

arxiv: 1203.0670 · arxiv_version: 1203.0670v2 · doi: 10.48550/arxiv.1203.0670 · pith_short_12: MBEGK3W2ABDQ · pith_short_16: MBEGK3W2ABDQRZRH · pith_short_8: MBEGK3W2

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/MBEGK3W2ABDQRZRH47XPIOB7IC \
  | 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: 6048656eda004708e627e7eef4383f40995b1131b747093a501df8e20f30b21d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90bdcc12d72988bc948912c99d456045959fa793469b43c088b9b89e0a44f679",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-03-03T17:47:21Z",
    "title_canon_sha256": "a5d4b8faeb46e177269d77178506466d709fe5fc1386b8f9fa7e0fd49fbf7758"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0670",
    "kind": "arxiv",
    "version": 2
  }
}