Pith Number

pith:EKYLWY7W

pith:2017:EKYLWY7WWFV6CI2ETGQAXVXTHW

not attested not anchored not stored refs pending

Y-Calculus: A Language for Real Matrices Derived from the ZX-Calculus

Emmanuel Jeandel, Renaud Vilmart, Simon Perdrix

arxiv:1702.00934 v2 · 2017-02-03 · quant-ph · 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{EKYLWY7WWFV6CI2ETGQAXVXTHW}

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	2026-05-18T00:22:11.134406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22b0bb63f6b16be1234499a00bd6f33dba7a959d95bc2fd23e3465223342f786

Aliases

arxiv: 1702.00934 · arxiv_version: 1702.00934v2 · doi: 10.48550/arxiv.1702.00934 · pith_short_12: EKYLWY7WWFV6 · pith_short_16: EKYLWY7WWFV6CI2E · pith_short_8: EKYLWY7W

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/EKYLWY7WWFV6CI2ETGQAXVXTHW \
  | 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: 22b0bb63f6b16be1234499a00bd6f33dba7a959d95bc2fd23e3465223342f786

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8b6ed6bdce10d04f68eec12f5e7844e3dba0ae3c8323548f9867619225c773f",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-02-03T08:36:52Z",
    "title_canon_sha256": "0a8163dd6b398ad7bd034a9a1f8434deb3ad37ca3fcad51ceda899aac017a2d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.00934",
    "kind": "arxiv",
    "version": 2
  }
}