Pith Number

pith:K5XZKS3G

pith:2011:K5XZKS3GLX2VANYJ4C6MNVWWHJ

not attested not anchored not stored refs pending

Easy implementable algorithm for the geometric measure of entanglement

Alexander Streltsov, Dagmar Bru{\ss}, Hermann Kampermann

arxiv:1104.0821 v1 · 2011-04-05 · 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{K5XZKS3GLX2VANYJ4C6MNVWWHJ}

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	2026-05-18T04:15:06.510742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

576f954b665df5503709e0bcc6d6d63a6d91f3af31b437d2aa8dd96348911864

Aliases

arxiv: 1104.0821 · arxiv_version: 1104.0821v1 · doi: 10.48550/arxiv.1104.0821 · pith_short_12: K5XZKS3GLX2V · pith_short_16: K5XZKS3GLX2VANYJ · pith_short_8: K5XZKS3G

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/K5XZKS3GLX2VANYJ4C6MNVWWHJ \
  | 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: 576f954b665df5503709e0bcc6d6d63a6d91f3af31b437d2aa8dd96348911864

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "918a9cc27800cad480f443036aabf5d7c4a03a8f82223355b2784de24eacdc61",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-04-05T12:26:43Z",
    "title_canon_sha256": "7d7a87d9680541f9bcdb35855a7d2b260228708c0368b4e2fe80beac914e21bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0821",
    "kind": "arxiv",
    "version": 1
  }
}