Pith Number

pith:XTUKNPRV

pith:2014:XTUKNPRVUCKIRQMYAFZQRPFV4S

not attested not anchored not stored refs pending

Robust topology optimization of three-dimensional photonic-crystal band-gap structures

Han Men, Jaime Peraire, Karen Y. K. Lee, Robert M. Freund, Steven G. Johnson

arxiv:1405.4350 v2 · 2014-05-17 · physics.comp-ph · math.OC · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XTUKNPRVUCKIRQMYAFZQRPFV4S}

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	2026-05-18T02:42:36.977968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bce8a6be35a09488c198017308bcb5e4ac765c49f7c776c532790ade3308ec64

Aliases

arxiv: 1405.4350 · arxiv_version: 1405.4350v2 · doi: 10.48550/arxiv.1405.4350 · pith_short_12: XTUKNPRVUCKI · pith_short_16: XTUKNPRVUCKIRQMY · pith_short_8: XTUKNPRV

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/XTUKNPRVUCKIRQMYAFZQRPFV4S \
  | 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: bce8a6be35a09488c198017308bcb5e4ac765c49f7c776c532790ade3308ec64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0244ec82f086e70858b75614f27fb6745d70e62637a7561ac51ea3269b52c7b",
    "cross_cats_sorted": [
      "math.OC",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2014-05-17T03:41:14Z",
    "title_canon_sha256": "0b8486cd974f9a0a84ce467ac7b618aa828b7f916435cb39fb2d1993e4669048"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4350",
    "kind": "arxiv",
    "version": 2
  }
}