Pith Number

pith:F4UBMMQ2

pith:2014:F4UBMMQ27TWVLC2GRU6AEK4GAJ

not attested not anchored not stored refs pending

Optimizing for an arbitrary perfect entangler: I. Functionals

Christiane P. Koch, Daniel M. Reich, Ji\v{r}\'i Vala, K. Birgitta Whaley, Matthias M. M\"uller, Michael H. Goerz, Paul Watts, Tommaso Calarco

arxiv:1412.7347 v1 · 2014-12-23 · 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{F4UBMMQ27TWVLC2GRU6AEK4GAJ}

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	2026-05-18T01:55:42.447734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f2816321afced558b468d3c022b86026657800db50af12b262df1ae01f9deed

Aliases

arxiv: 1412.7347 · arxiv_version: 1412.7347v1 · doi: 10.48550/arxiv.1412.7347 · pith_short_12: F4UBMMQ27TWV · pith_short_16: F4UBMMQ27TWVLC2G · pith_short_8: F4UBMMQ2

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/F4UBMMQ27TWVLC2GRU6AEK4GAJ \
  | 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: 2f2816321afced558b468d3c022b86026657800db50af12b262df1ae01f9deed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5558f3d32126cf50e49c4a1c6aa2d31b12d5487e9a6f070d63d5921d74238542",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-12-23T12:41:58Z",
    "title_canon_sha256": "67d6efa2d89c81b518616d92a16256480fa7eb0933f29e0ceb74d0743e02ab60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.7347",
    "kind": "arxiv",
    "version": 1
  }
}