Pith Number

pith:JIW5SY2W

pith:2019:JIW5SY2WZP2WF4UL32WPHVAMTM

not attested not anchored not stored refs pending

A Unified Definition and Computation of Laplacian Spectral Distances

Giuseppe Patan\`e

arxiv:1906.03900 v2 · 2019-06-10 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JIW5SY2WZP2WF4UL32WPHVAMTM}

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	2026-07-05T01:49:47.132260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a2dd96356cbf562f28bdeacf3d40c9b23cda7d7ae7951b2c4b17dd290d908a3

Aliases

arxiv: 1906.03900 · arxiv_version: 1906.03900v2 · doi: 10.48550/arxiv.1906.03900 · pith_short_12: JIW5SY2WZP2W · pith_short_16: JIW5SY2WZP2WF4UL · pith_short_8: JIW5SY2W

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/JIW5SY2WZP2WF4UL32WPHVAMTM \
  | 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: 4a2dd96356cbf562f28bdeacf3d40c9b23cda7d7ae7951b2c4b17dd290d908a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9c3c8553dc48d24d7e6a20876c9ec1252c3711cf003d0038dc22081772d1c91",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-06-10T11:05:46Z",
    "title_canon_sha256": "efebdaff40f693cb1024b8f062728f35c51e44734698673fa080be6f2744bbf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.03900",
    "kind": "arxiv",
    "version": 2
  }
}