Pith Number

pith:Y3QNVRSA

pith:2019:Y3QNVRSAQADVWNMOS6RGHFX25Q

not attested not anchored not stored refs pending

Density Matrices with Metric for Derivational Ambiguity

Adriana D. Correia, Henk T. C. Stoof, Michael Moortgat

arxiv:1908.07347 v3 · 2019-08-20 · cs.CL · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y3QNVRSAQADVWNMOS6RGHFX25Q}

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	2026-07-05T01:49:13.904406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6e0dac64080075b358e97a26396faec16fb7ec6a97f2ec8698f311cd72c9752

Aliases

arxiv: 1908.07347 · arxiv_version: 1908.07347v3 · doi: 10.48550/arxiv.1908.07347 · pith_short_12: Y3QNVRSAQADV · pith_short_16: Y3QNVRSAQADVWNMO · pith_short_8: Y3QNVRSA

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/Y3QNVRSAQADVWNMOS6RGHFX25Q \
  | 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: c6e0dac64080075b358e97a26396faec16fb7ec6a97f2ec8698f311cd72c9752

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0352ccfb8b3ae524ed0d62c53211559428663d187b00f4112e19588162071e1",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-08-20T13:49:30Z",
    "title_canon_sha256": "9a0b6e6276f9a7d0e2757b5e835b7431385de33bad66521c5c5a8132cd7905e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07347",
    "kind": "arxiv",
    "version": 3
  }
}