Pith Number

pith:N4Z5HRXA

pith:2011:N4Z5HRXATFGE5S67RO6GQRCZZH

not attested not anchored not stored refs pending

A pseudospectral matrix method for time-dependent tensor fields on a spherical shell

Bernd Bruegmann

arxiv:1104.3408 v1 · 2011-04-18 · physics.comp-ph · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N4Z5HRXATFGE5S67RO6GQRCZZH}

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	2026-05-18T02:02:23.814013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f33d3c6e0994c4ecbdf8bbc684459c9c8134269be2f23310bfff5704084371c

Aliases

arxiv: 1104.3408 · arxiv_version: 1104.3408v1 · doi: 10.48550/arxiv.1104.3408 · pith_short_12: N4Z5HRXATFGE · pith_short_16: N4Z5HRXATFGE5S67 · pith_short_8: N4Z5HRXA

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/N4Z5HRXATFGE5S67RO6GQRCZZH \
  | 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: 6f33d3c6e0994c4ecbdf8bbc684459c9c8134269be2f23310bfff5704084371c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e5d257ee3af712c9bcdf9b284d89cf88858fc0b29724f0bb720a18fd48a002a",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2011-04-18T08:20:08Z",
    "title_canon_sha256": "d8d14ecf72e0fb28c7e53de7d4aaa527bf7b911f70c272bb2f5ad59696c30291"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3408",
    "kind": "arxiv",
    "version": 1
  }
}