Pith Number

pith:B27JPC4E

pith:2018:B27JPC4EPIAVYINFQLU66DNFYX

not attested not anchored not stored refs pending

Hermitian Laplacians and a Cheeger inequality for the Max-2-Lin problem

He Sun, Huan Li, Luca Zanetti

arxiv:1811.10909 v1 · 2018-11-27 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{B27JPC4EPIAVYINFQLU66DNFYX}

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	2026-05-17T23:59:45.683765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ebe978b847a015c21a582e9ef0da5c5c770fd2a31e378a39ebf483f05950abb

Aliases

arxiv: 1811.10909 · arxiv_version: 1811.10909v1 · doi: 10.48550/arxiv.1811.10909 · pith_short_12: B27JPC4EPIAV · pith_short_16: B27JPC4EPIAVYINF · pith_short_8: B27JPC4E

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/B27JPC4EPIAVYINFQLU66DNFYX \
  | 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: 0ebe978b847a015c21a582e9ef0da5c5c770fd2a31e378a39ebf483f05950abb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f7a56c53ea2821352deef93b6eb960f241343b9f9c9fef870a68b8bccedb779",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-11-27T11:02:36Z",
    "title_canon_sha256": "301f11e8bfdd4d7d27a37bb3320c4dec20b9c20dafe177240db959c7707eb51a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.10909",
    "kind": "arxiv",
    "version": 1
  }
}