Pith Number

pith:JB73VU2P

pith:2017:JB73VU2PMM7H42I4MLWQ264JMC

not attested not anchored not stored refs pending

Optimizing the first Dirichlet eigenvalue of the Laplacian with an obstacle

Antoine Henrot, Davide Zucco

arxiv:1702.01307 v2 · 2017-02-04 · math.AP · math.OC · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JB73VU2PMM7H42I4MLWQ264JMC}

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	2026-05-18T00:20:07.240017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

487fbad34f633e7e691c62ed0d7b8960a38801b06982f18097ddc2f75e344b8d

Aliases

arxiv: 1702.01307 · arxiv_version: 1702.01307v2 · doi: 10.48550/arxiv.1702.01307 · pith_short_12: JB73VU2PMM7H · pith_short_16: JB73VU2PMM7H42I4 · pith_short_8: JB73VU2P

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/JB73VU2PMM7H42I4MLWQ264JMC \
  | 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: 487fbad34f633e7e691c62ed0d7b8960a38801b06982f18097ddc2f75e344b8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cbb0002101487d6cf29d505ea438705e53e5217c53e546818059d6ef2510613",
    "cross_cats_sorted": [
      "math.OC",
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-02-04T17:16:28Z",
    "title_canon_sha256": "5d3ef106a94dff3420fa9ac96c01c87e6e2205a09e0ca0eed7929cdbf96c85cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.01307",
    "kind": "arxiv",
    "version": 2
  }
}