Pith Number

pith:ZI46NZPO

pith:2015:ZI46NZPOZQ6NGNCLC24MQCWJMW

not attested not anchored not stored refs pending

High order eigenvalues for the Helmholtz equation in complicated non-tensor domains through Richardson Extrapolation of second order finite differences

Boris R\"osler, Francisco M. Fernandez, John P. Boyd, Paolo Amore

arxiv:1509.02795 v1 · 2015-09-09 · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZI46NZPOZQ6NGNCLC24MQCWJMW}

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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	2026-05-18T01:18:43.187223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca39e6e5eecc3cd3344b16b8c80ac965a913b155c9eaf208a67d8d244947c32e

Aliases

arxiv: 1509.02795 · arxiv_version: 1509.02795v1 · doi: 10.48550/arxiv.1509.02795 · pith_short_12: ZI46NZPOZQ6N · pith_short_16: ZI46NZPOZQ6NGNCL · pith_short_8: ZI46NZPO

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/ZI46NZPOZQ6NGNCLC24MQCWJMW \
  | 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: ca39e6e5eecc3cd3344b16b8c80ac965a913b155c9eaf208a67d8d244947c32e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f1f4f0dd1b2a894428fbaf22d561e6c4e38e1c3e9ddc2c7aea535e9d62c6f10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2015-09-09T14:48:42Z",
    "title_canon_sha256": "dbd824c1c417c34570b59097a17913c5ffa1906f3b079c308b186a1161dcfaaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.02795",
    "kind": "arxiv",
    "version": 1
  }
}