Pith Number

pith:KRCAJJHR

pith:2018:KRCAJJHRGRET7GYTR4SWLLPDVH

not attested not anchored not stored refs pending

Fast computation of von Neumann entropy for large-scale graphs via quadratic approximations

Hang Hu, Hayoung Choi, Jinglian He, Yuanming Shi

arxiv:1811.11087 v2 · 2018-11-12 · cs.IT · cs.DS · cs.SI · eess.SP · math.IT · physics.data-an

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KRCAJJHRGRET7GYTR4SWLLPDVH}

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	2026-05-17T23:40:08.849059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

544404a4f134493f9b138f2565ade3a9d991b207b57c4201475aea92db46572c

Aliases

arxiv: 1811.11087 · arxiv_version: 1811.11087v2 · doi: 10.48550/arxiv.1811.11087 · pith_short_12: KRCAJJHRGRET · pith_short_16: KRCAJJHRGRET7GYT · pith_short_8: KRCAJJHR

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/KRCAJJHRGRET7GYTR4SWLLPDVH \
  | 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: 544404a4f134493f9b138f2565ade3a9d991b207b57c4201475aea92db46572c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7b38ba6af3db5c552c23a8d1ca4da02b1d80ab6b9db138eef6297215dd8d461",
    "cross_cats_sorted": [
      "cs.DS",
      "cs.SI",
      "eess.SP",
      "math.IT",
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-11-12T16:02:08Z",
    "title_canon_sha256": "c76960d969820b91c42970d0ab8a070ae8f803ea371fa7f1962dba4f514a83dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.11087",
    "kind": "arxiv",
    "version": 2
  }
}