Pith Number

pith:UN47HX3U

pith:2018:UN47HX3UMZLYGUH6YCZYAIT3SE

not attested not anchored not stored refs pending

On the Complexity of Solving Subtraction Games

Dmitry Kravchenko, Kamil Khadiev

arxiv:1808.03494 v1 · 2018-08-10 · quant-ph · cs.CC · cs.DS · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UN47HX3UMZLYGUH6YCZYAIT3SE}

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	2026-05-18T00:08:24.870013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a379f3df7466578350fec0b380227b911c399f8f688748a3470893c6c36d1f2f

Aliases

arxiv: 1808.03494 · arxiv_version: 1808.03494v1 · doi: 10.48550/arxiv.1808.03494 · pith_short_12: UN47HX3UMZLY · pith_short_16: UN47HX3UMZLYGUH6 · pith_short_8: UN47HX3U

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/UN47HX3UMZLYGUH6YCZYAIT3SE \
  | 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: a379f3df7466578350fec0b380227b911c399f8f688748a3470893c6c36d1f2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e333d4471735bf101a84f9f77e11401e8f37326e37f43420e5cecec6f6179356",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS",
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-08-10T11:45:22Z",
    "title_canon_sha256": "86d3d36a56b36ea61fec0994dadb0d56ec27904326c7aa411cf729973f3ebeb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.03494",
    "kind": "arxiv",
    "version": 1
  }
}