Pith Number

pith:RQGIFV64

pith:2018:RQGIFV64B7PLQXZWBX75KSBF5E

not attested not anchored not stored refs pending

Towards an Entanglement Measure for Mixed States in CFTs Based on Relative Entropy

Koji Umemoto, Tadashi Takayanagi, Tomonori Ugajin

arxiv:1807.09448 v3 · 2018-07-25 · hep-th · cond-mat.stat-mech · 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{RQGIFV64B7PLQXZWBX75KSBF5E}

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	2026-05-18T00:00:51.740778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c0c82d7dc0fdeb85f360dffd54825e920b47ac10045a3537a309ffccea46b8f

Aliases

arxiv: 1807.09448 · arxiv_version: 1807.09448v3 · doi: 10.48550/arxiv.1807.09448 · pith_short_12: RQGIFV64B7PL · pith_short_16: RQGIFV64B7PLQXZW · pith_short_8: RQGIFV64

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/RQGIFV64B7PLQXZWBX75KSBF5E \
  | 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: 8c0c82d7dc0fdeb85f360dffd54825e920b47ac10045a3537a309ffccea46b8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48f2e7eb742f362dc4c27d8cc0da9fee4db296019c593d5ed42530b94bfee214",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2018-07-25T06:23:05Z",
    "title_canon_sha256": "a3a750257ee7a4a9cb889df1c4833ec959dc7ddab23c3ad40b7a429623d83e20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.09448",
    "kind": "arxiv",
    "version": 3
  }
}