Pith Number

pith:FRIDB2QF

pith:2013:FRIDB2QFIBNP7FCG6W225GA7RF

not attested not anchored not stored refs pending

Graphic lambda calculus

Marius Buliga

arxiv:1305.5786 v2 · 2013-05-24 · cs.LO · math.GT · 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{FRIDB2QFIBNP7FCG6W225GA7RF}

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	2026-05-17T23:53:58.313653Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c5030ea05405aff9446f5b5ae981f8956370c4ff09104bb2ef165a80198e56b

Aliases

arxiv: 1305.5786 · arxiv_version: 1305.5786v2 · doi: 10.48550/arxiv.1305.5786 · pith_short_12: FRIDB2QFIBNP · pith_short_16: FRIDB2QFIBNP7FCG · pith_short_8: FRIDB2QF

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/FRIDB2QFIBNP7FCG6W225GA7RF \
  | 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: 2c5030ea05405aff9446f5b5ae981f8956370c4ff09104bb2ef165a80198e56b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d15e1a6df124caa38fa6c7002be0de68a32c00793fdf8943e772057b907c5358",
    "cross_cats_sorted": [
      "math.GT",
      "math.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-05-24T16:38:25Z",
    "title_canon_sha256": "047e67e394518cb87ee5f61ec74ea8586d401a76f825f9cc662d78b714328d3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5786",
    "kind": "arxiv",
    "version": 2
  }
}