Pith Number

pith:SNADJSOI

pith:2020:SNADJSOIVRSGKUH7QRN2PS4XE4

not attested not anchored not stored refs pending

Superposition for Lambda-Free Higher-Order Logic

Alexander Bentkamp, Jasmin Blanchette, Simon Cruanes, Uwe Waldmann

arxiv:2005.02094 v4 · 2020-05-05 · cs.LO · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SNADJSOIVRSGKUH7QRN2PS4XE4}

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	2026-07-05T06:23:29.872557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

934034c9c8ac646550ff845ba7cb97272bb6e9f6af78b729f8a1ad92e9665251

Aliases

arxiv: 2005.02094 · arxiv_version: 2005.02094v4 · doi: 10.48550/arxiv.2005.02094 · pith_short_12: SNADJSOIVRSG · pith_short_16: SNADJSOIVRSGKUH7 · pith_short_8: SNADJSOI

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/SNADJSOIVRSGKUH7QRN2PS4XE4 \
  | 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: 934034c9c8ac646550ff845ba7cb97272bb6e9f6af78b729f8a1ad92e9665251

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c844214e9c05015fcc44f6c11b6f2d74375422a502018d37fb9598aa3aa5e560",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2020-05-05T12:10:21Z",
    "title_canon_sha256": "2780a4bc4539471609233a4a0d86ddeef802ed478a1ab21a20dbc8fd8f3b6ed2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.02094",
    "kind": "arxiv",
    "version": 4
  }
}