Pith Number

pith:AB5QGUPX

pith:2011:AB5QGUPXP6YVOU5FX4XFFE4Z2L

not attested not anchored not stored refs pending

Roundoff errors in the problem of computing Cauchy principal value integrals

Iwona Wr\'obel, Pawe{\l} Keller

arxiv:1111.2283 v2 · 2011-11-09 · 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{AB5QGUPXP6YVOU5FX4XFFE4Z2L}

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	2026-05-18T01:25:40.113508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

007b0351f77fb15753a5bf2e529399d2d1e135527688e152bc4ebf97327470c7

Aliases

arxiv: 1111.2283 · arxiv_version: 1111.2283v2 · doi: 10.48550/arxiv.1111.2283 · pith_short_12: AB5QGUPXP6YV · pith_short_16: AB5QGUPXP6YVOU5F · pith_short_8: AB5QGUPX

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/AB5QGUPXP6YVOU5FX4XFFE4Z2L \
  | 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: 007b0351f77fb15753a5bf2e529399d2d1e135527688e152bc4ebf97327470c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1eca9053bbd47157816840277595d11a0626531a4115ae27b5576e2cff7ad0b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-11-09T17:31:47Z",
    "title_canon_sha256": "cf278f20c903e282b88f5254d8be5a35ab4b5fbf28b09299fa3cd5b4b1bc47b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2283",
    "kind": "arxiv",
    "version": 2
  }
}