Pith Number

pith:KA7ISNGQ

pith:2015:KA7ISNGQWJUUAWTLIIMQ7D2MFQ

not attested not anchored not stored refs pending

Capturing k-ary Existential Second Order Logic with k-ary Inclusion-Exclusion Logic

Raine R\"onnholm

arxiv:1502.05632 v4 · 2015-02-19 · math.LO · 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{KA7ISNGQWJUUAWTLIIMQ7D2MFQ}

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	2026-05-18T00:13:08.313091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

503e8934d0b269405a6b42190f8f4c2c2d51735b1bd4d9f8eb48830e649e8dfb

Aliases

arxiv: 1502.05632 · arxiv_version: 1502.05632v4 · doi: 10.48550/arxiv.1502.05632 · pith_short_12: KA7ISNGQWJUU · pith_short_16: KA7ISNGQWJUUAWTL · pith_short_8: KA7ISNGQ

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/KA7ISNGQWJUUAWTLIIMQ7D2MFQ \
  | 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: 503e8934d0b269405a6b42190f8f4c2c2d51735b1bd4d9f8eb48830e649e8dfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34109f48ec35738ec3239d76e8674bd402508ea433caa5b7407ae1e38f9337ec",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-02-19T17:20:25Z",
    "title_canon_sha256": "9fa72f4d30df4ed1250e2cc21698ab911ffe3f17737fbf7428191622e85d4ed8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.05632",
    "kind": "arxiv",
    "version": 4
  }
}