Pith Number

pith:R34RRKHR

pith:2018:R34RRKHRH7PPFMTIQ6U2I4XVYN

not attested not anchored not stored refs pending

A SAT Encoding for the $n$-Fractions Problem

Michael Codish

arxiv:1807.00507 v1 · 2018-07-02 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R34RRKHRH7PPFMTIQ6U2I4XVYN}

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	2026-05-18T00:11:52.370502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ef918a8f13fdef2b26887a9a472f5c35d1c5ca0e36bcd7212af4858feb72ecd

Aliases

arxiv: 1807.00507 · arxiv_version: 1807.00507v1 · doi: 10.48550/arxiv.1807.00507 · pith_short_12: R34RRKHRH7PP · pith_short_16: R34RRKHRH7PPFMTI · pith_short_8: R34RRKHR

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/R34RRKHRH7PPFMTIQ6U2I4XVYN \
  | 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: 8ef918a8f13fdef2b26887a9a472f5c35d1c5ca0e36bcd7212af4858feb72ecd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d032df6c02221527d35da6f681591561a016ddd82ac900c17a1839f8799674bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-07-02T07:54:17Z",
    "title_canon_sha256": "b08834824b74c0a9e85ead543ed2542b7564d0adfaebea44e0680f88a18fad52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00507",
    "kind": "arxiv",
    "version": 1
  }
}