Pith Number

pith:J4MKYUDO

pith:2014:J4MKYUDOQEOCXFNNXDOGZP45CU

not attested not anchored not stored refs pending

Numerical studies of the optimization of the first eigenvalue of the heat diffusion in inhomogeneous media

Hisashi Naito, Kaname Matsue

arxiv:1408.5370 v2 · 2014-08-22 · math.OC · 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{J4MKYUDOQEOCXFNNXDOGZP45CU}

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	2026-05-18T02:18:13.612891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f18ac506e811c2b95adb8dc6cbf9d152817f11108be165f00150b87e1dc6de9

Aliases

arxiv: 1408.5370 · arxiv_version: 1408.5370v2 · doi: 10.48550/arxiv.1408.5370 · pith_short_12: J4MKYUDOQEOC · pith_short_16: J4MKYUDOQEOCXFNN · pith_short_8: J4MKYUDO

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/J4MKYUDOQEOCXFNNXDOGZP45CU \
  | 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: 4f18ac506e811c2b95adb8dc6cbf9d152817f11108be165f00150b87e1dc6de9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f3af9a4d9d32a6dbfd27b6597712a9972fc5d289debb8ba41142f3f57fb6a6b",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-08-22T17:57:05Z",
    "title_canon_sha256": "40e76d275ee92181964351bdb5e8fc9999dbfc5b0c7df7773cd27db2576faff6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5370",
    "kind": "arxiv",
    "version": 2
  }
}