Pith Number

pith:7AL7RVCW

pith:2011:7AL7RVCWNURIR7XSFD64M27224

not attested not anchored not stored refs pending

Fast computation of high frequency Dirichlet eigenmodes via the spectral flow of the interior Neumann-to-Dirichlet map

Alex H. Barnett, Andrew Hassell

arxiv:1112.5665 v1 · 2011-12-23 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7AL7RVCWNURIR7XSFD64M27224}

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	2026-05-18T04:05:37.850042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f817f8d4566d2288fef228fdc66bfad71f74f6400107af12abf2af8d7c5454a3

Aliases

arxiv: 1112.5665 · arxiv_version: 1112.5665v1 · doi: 10.48550/arxiv.1112.5665 · pith_short_12: 7AL7RVCWNURI · pith_short_16: 7AL7RVCWNURIR7XS · pith_short_8: 7AL7RVCW

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/7AL7RVCWNURIR7XSFD64M27224 \
  | 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: f817f8d4566d2288fef228fdc66bfad71f74f6400107af12abf2af8d7c5454a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9c3e483dbe2a03a93b5395a8a832d82c0a5fb731029ae06339fe2a270743951",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-12-23T21:55:19Z",
    "title_canon_sha256": "8cc87a0f8755d5133f1cf3a7ce7bc9d71187d363d7ed17b53bc667eb263c23c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.5665",
    "kind": "arxiv",
    "version": 1
  }
}