Pith Number

pith:4TSLISHE

pith:2011:4TSLISHETOL6X3AW5F7WGZI34J

not attested not anchored not stored refs pending

Swapping: a natural bridge between named and indexed explicit substitution calculi

Alejandro R\'ios (Departamento de Computaci\'on, Ariel Mendelzon (Departamento de Computaci\'on, Beta Ziliani (Departamento de Computaci\'on, FCEyN, Universidad de Buenos Aires)

arxiv:1102.3730 v1 · 2011-02-18 · cs.LO · cs.PL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4TSLISHETOL6X3AW5F7WGZI34J}

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	2026-05-18T04:28:21.131993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4e4b448e49b97ebec16e97f63651be259a2a23b68aeb0917d0a6cbbded6c1a7

Aliases

arxiv: 1102.3730 · arxiv_version: 1102.3730v1 · doi: 10.48550/arxiv.1102.3730 · pith_short_12: 4TSLISHETOL6 · pith_short_16: 4TSLISHETOL6X3AW · pith_short_8: 4TSLISHE

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/4TSLISHETOL6X3AW5F7WGZI34J \
  | 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: e4e4b448e49b97ebec16e97f63651be259a2a23b68aeb0917d0a6cbbded6c1a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a189ba595e1eadab679f887d4792872b9ecbd93b4d96009b8a644596218a3b09",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-02-18T01:44:20Z",
    "title_canon_sha256": "734a2937c13ce0b297f92106c642bbbea6444ba2585acfbabefcf6876c161c86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3730",
    "kind": "arxiv",
    "version": 1
  }
}