Pith Number

pith:SGX3VZ7O

pith:2011:SGX3VZ7OOW6TETIVIMOKLRJHNF

not attested not anchored not stored refs pending

Unbounded quantum Fisher information in two-path interferometry with finite photon number

G. R. Jin, H. Fan, J. P. Cao, W. M. Liu, Y. R. Zhang

arxiv:1105.2990 v5 · 2011-05-16 · 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{SGX3VZ7OOW6TETIVIMOKLRJHNF}

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	2026-05-18T02:01:58.113065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91afbae7ee75bd324d15431ca5c527697925c85b856f268369e1d0503a9bf468

Aliases

arxiv: 1105.2990 · arxiv_version: 1105.2990v5 · doi: 10.48550/arxiv.1105.2990 · pith_short_12: SGX3VZ7OOW6T · pith_short_16: SGX3VZ7OOW6TETIV · pith_short_8: SGX3VZ7O

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/SGX3VZ7OOW6TETIVIMOKLRJHNF \
  | 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: 91afbae7ee75bd324d15431ca5c527697925c85b856f268369e1d0503a9bf468

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35feae4dc9c66205462d42c8c676acf0e11786a011e2d6cc81bd69c6331d3383",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-05-16T01:52:16Z",
    "title_canon_sha256": "416d7fdc772b6940e4fbca6bb78994e3d3674d11435cf2f9497c10de9d3bfb46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.2990",
    "kind": "arxiv",
    "version": 5
  }
}