Pith Number

pith:HN4F5QDA

pith:2015:HN4F5QDA42PC4AIZ3MZI2UYJJK

not attested not anchored not stored refs pending

Constraint Satisfaction Problems around Skolem Arithmetic

Barnaby Martin, Christian Glasser, Peter Jonsson

arxiv:1504.04181 v1 · 2015-04-16 · cs.CC · 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{HN4F5QDA42PC4AIZ3MZI2UYJJK}

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	2026-05-18T02:18:39.558272Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b785ec060e69e2e0119db328d53094a838ec35eec2a0ec0152323e4b87dc4da

Aliases

arxiv: 1504.04181 · arxiv_version: 1504.04181v1 · doi: 10.48550/arxiv.1504.04181 · pith_short_12: HN4F5QDA42PC · pith_short_16: HN4F5QDA42PC4AIZ · pith_short_8: HN4F5QDA

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/HN4F5QDA42PC4AIZ3MZI2UYJJK \
  | 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: 3b785ec060e69e2e0119db328d53094a838ec35eec2a0ec0152323e4b87dc4da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d011c2777e01d5283aa26d5a626f79d6c83561e1508bccc10c69e6cac10f2e5b",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-04-16T11:03:52Z",
    "title_canon_sha256": "d3984bda828a3b8a8f2b1f7beaec852fa0c3024f079cce2dc060a7fb04fc7be8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04181",
    "kind": "arxiv",
    "version": 1
  }
}