Pith Number

pith:SCQVJBVU

pith:2017:SCQVJBVUYEBI7AUBF2KAYZNADM

not attested not anchored not stored refs pending

An Estimate of the First Eigenvalue of a Schr\"odinger Operator on Closed Surfaces

Teng Fei, Zhijie Huang

arxiv:1704.05418 v1 · 2017-04-18 · math.DG · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SCQVJBVUYEBI7AUBF2KAYZNADM}

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	2026-05-18T00:15:42.279550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90a15486b4c1028f82812e940c65a01b2668f829893f5bfa26e85987cce0b023

Aliases

arxiv: 1704.05418 · arxiv_version: 1704.05418v1 · doi: 10.48550/arxiv.1704.05418 · pith_short_12: SCQVJBVUYEBI · pith_short_16: SCQVJBVUYEBI7AUB · pith_short_8: SCQVJBVU

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/SCQVJBVUYEBI7AUBF2KAYZNADM \
  | 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: 90a15486b4c1028f82812e940c65a01b2668f829893f5bfa26e85987cce0b023

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82c0809e178354871e03ceb09f9c54563a3b1208454ee23e936cab4b5b3e5582",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-04-18T16:46:24Z",
    "title_canon_sha256": "f203c8721a3e406b76125ef2a31268fe778c00dd909f24ec8ec1e3f3b9a09ced"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.05418",
    "kind": "arxiv",
    "version": 1
  }
}