Pith Number

pith:4TN35434

pith:2017:4TN354345NSO6QIPDESM6AH442

not attested not anchored not stored refs pending

The Hardness of Solving Simple Word Equations

Dirk Nowotka, Florin Manea, Joel D. Day

arxiv:1702.07922 v2 · 2017-02-25 · 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{4TN354345NSO6QIPDESM6AH442}

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	2026-05-18T00:49:50.583213Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4dbbef37ceb64ef410f1924cf00fce6a7427dd99a33cf567945f72572f4a0b4

Aliases

arxiv: 1702.07922 · arxiv_version: 1702.07922v2 · doi: 10.48550/arxiv.1702.07922 · pith_short_12: 4TN354345NSO · pith_short_16: 4TN354345NSO6QIP · pith_short_8: 4TN35434

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/4TN354345NSO6QIPDESM6AH442 \
  | 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: e4dbbef37ceb64ef410f1924cf00fce6a7427dd99a33cf567945f72572f4a0b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33efaf1f845234a14697aa6440fe23fd7b11cabb6c9a02b7d2e18dc0dd2a9460",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2017-02-25T17:05:35Z",
    "title_canon_sha256": "361d6eea952db130e2cc34e54c9cc488ebdf10f96d8118c9d1de3decb3851ef9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.07922",
    "kind": "arxiv",
    "version": 2
  }
}