Pith Number

pith:UB4LIIPC

pith:2019:UB4LIIPC5DPFRGJXBFVQNWRVDZ

not attested not anchored not stored refs pending

On Solving Word Equations Using SAT

Danny B{\o}gsted Poulsen, Dirk Nowotka, Florin Manea, Joel D. Day, Mitja Kulczynski, Thorsten Ehlers

arxiv:1906.11718 v1 · 2019-06-27 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UB4LIIPC5DPFRGJXBFVQNWRVDZ}

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	2026-05-17T23:42:04.015176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a078b421e2e8de589937096b06da351e4c7829aa5b2674d72cd0819b7cead77c

Aliases

arxiv: 1906.11718 · arxiv_version: 1906.11718v1 · doi: 10.48550/arxiv.1906.11718 · pith_short_12: UB4LIIPC5DPF · pith_short_16: UB4LIIPC5DPFRGJX · pith_short_8: UB4LIIPC

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/UB4LIIPC5DPFRGJXBFVQNWRVDZ \
  | 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: a078b421e2e8de589937096b06da351e4c7829aa5b2674d72cd0819b7cead77c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a593a1130e47703c00f0cfe0ad5dadd7131855910f47c41dec921f15691e0e3b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2019-06-27T15:03:20Z",
    "title_canon_sha256": "0bcf2383a27d393bf762f1123f0759c3d811ee98c828d637be2b1d1d7a557ce0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.11718",
    "kind": "arxiv",
    "version": 1
  }
}