Pith Number

pith:QDW4EK5W

pith:2014:QDW4EK5WJ7CPVNJZ3OTKETXJFA

not attested not anchored not stored refs pending

Generalized Summation-by-Parts Operators for the Second Derivative with Variable Coefficients

David C. Del Rey Fern\'andez, David W. Zingg

arxiv:1410.5029 v1 · 2014-10-19 · cs.NA · 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{QDW4EK5WJ7CPVNJZ3OTKETXJFA}

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	2026-05-18T02:39:47.148372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80edc22bb64fc4fab539dba6a24ee928341225af308823d3777fee9971cca807

Aliases

arxiv: 1410.5029 · arxiv_version: 1410.5029v1 · doi: 10.48550/arxiv.1410.5029 · pith_short_12: QDW4EK5WJ7CP · pith_short_16: QDW4EK5WJ7CPVNJZ · pith_short_8: QDW4EK5W

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/QDW4EK5WJ7CPVNJZ3OTKETXJFA \
  | 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: 80edc22bb64fc4fab539dba6a24ee928341225af308823d3777fee9971cca807

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50a12acc03587501d16b8071e707bbe8c1dba89c0befee8a45c6ab36b71cce04",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2014-10-19T02:31:57Z",
    "title_canon_sha256": "cf6fe26fae948fb49a18933f86248fc67d6d24467f6f7e8cc37596fbbf8e3ba8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.5029",
    "kind": "arxiv",
    "version": 1
  }
}