Pith Number

pith:FL4FHWAE

pith:2017:FL4FHWAEM7MOIVYCKYPMSEKDOS

not attested not anchored not stored refs pending

Statistical speed of quantum states: Generalized quantum Fisher information and Schatten speed

Augusto Smerzi, Manuel Gessner

arxiv:1712.04661 v2 · 2017-12-13 · 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{FL4FHWAEM7MOIVYCKYPMSEKDOS}

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	2026-05-18T00:22:57.214855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2af853d80467d8e45702561ec9114374816d45cb34de9bcec13a5deb326e8b0d

Aliases

arxiv: 1712.04661 · arxiv_version: 1712.04661v2 · doi: 10.48550/arxiv.1712.04661 · pith_short_12: FL4FHWAEM7MO · pith_short_16: FL4FHWAEM7MOIVYC · pith_short_8: FL4FHWAE

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/FL4FHWAEM7MOIVYCKYPMSEKDOS \
  | 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: 2af853d80467d8e45702561ec9114374816d45cb34de9bcec13a5deb326e8b0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d62cdff4924b3f15f9463837087f9c7d6311bb3da4a37479ed38b21bd1398de6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-12-13T08:54:13Z",
    "title_canon_sha256": "85082b39589a5d12795f60fa1b39558d0ded82fe61f2d4e9c0383ad5fa2ab8d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.04661",
    "kind": "arxiv",
    "version": 2
  }
}