Pith Number

pith:7FO55AKF

pith:2018:7FO55AKFZJYM6UAXE47YKBP2S7

not attested not anchored not stored refs pending

Quadratic Word Equations with Length Constraints, Counter Systems, and Presburger Arithmetic with Divisibility

Anthony W. Lin, Rupak Majumdar

arxiv:1805.06701 v1 · 2018-05-17 · 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{7FO55AKFZJYM6UAXE47YKBP2S7}

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	2026-05-18T00:15:43.581618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f95dde8145ca70cf5017273f8505fa97eb42cb2cfdfcdef448d861c4f0379448

Aliases

arxiv: 1805.06701 · arxiv_version: 1805.06701v1 · doi: 10.48550/arxiv.1805.06701 · pith_short_12: 7FO55AKFZJYM · pith_short_16: 7FO55AKFZJYM6UAX · pith_short_8: 7FO55AKF

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/7FO55AKFZJYM6UAXE47YKBP2S7 \
  | 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: f95dde8145ca70cf5017273f8505fa97eb42cb2cfdfcdef448d861c4f0379448

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d92d5a20bb153ebb132f6b55829e4bc9e6c818de3350a99eb98e74f60c404ed",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-05-17T11:22:16Z",
    "title_canon_sha256": "1f136f2b5bbc07b88af5fd159c38fd64b69d5f2b5ae785695099f8904ee43434"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.06701",
    "kind": "arxiv",
    "version": 1
  }
}