Pith Number

pith:MZROEPXU

pith:2011:MZROEPXUMLULC2DFINSWUI72QB

not attested not anchored not stored refs pending

Quantum strategies are better than classical in almost any XOR game

Andris Ambainis, Arturs Backurs, Dmitry Kravcenko, Juris Smotrovs, Kaspars Balodis, Madars Virza, Raitis Ozols

arxiv:1112.3330 v1 · 2011-12-14 · quant-ph · 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{MZROEPXUMLULC2DFINSWUI72QB}

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	2026-05-18T04:06:19.461488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6662e23ef462e8b1686543656a23fa80510d85e52e194dc66fa1ee4c8c5fe797

Aliases

arxiv: 1112.3330 · arxiv_version: 1112.3330v1 · doi: 10.48550/arxiv.1112.3330 · pith_short_12: MZROEPXUMLUL · pith_short_16: MZROEPXUMLULC2DF · pith_short_8: MZROEPXU

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/MZROEPXUMLULC2DFINSWUI72QB \
  | 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: 6662e23ef462e8b1686543656a23fa80510d85e52e194dc66fa1ee4c8c5fe797

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "206953c89c90dbf111341975de188c52b98fb50581df245b541888f2cfd7d1b4",
    "cross_cats_sorted": [
      "cs.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-12-14T20:36:07Z",
    "title_canon_sha256": "d601f708672b37fe10e877946c182c961cee7a486fbeba5d6482fcda1ab81dda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3330",
    "kind": "arxiv",
    "version": 1
  }
}