Pith Number

pith:RJVEE3NJ

pith:2013:RJVEE3NJCN2QJZNW5IASIZMWBZ

not attested not anchored not stored refs pending

A Nystrom flavored Calder\'on Calculus of order three for two dimensional waves

F.-J. Sayas, S.L. Lu, V. Dominguez

arxiv:1304.7218 v1 · 2013-04-26 · 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{RJVEE3NJCN2QJZNW5IASIZMWBZ}

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	2026-05-18T03:27:02.251091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a6a426da9137504e5b6ea012465960e45d17dd87e371aaf91455469a5b42321

Aliases

arxiv: 1304.7218 · arxiv_version: 1304.7218v1 · doi: 10.48550/arxiv.1304.7218 · pith_short_12: RJVEE3NJCN2Q · pith_short_16: RJVEE3NJCN2QJZNW · pith_short_8: RJVEE3NJ

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/RJVEE3NJCN2QJZNW5IASIZMWBZ \
  | 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: 8a6a426da9137504e5b6ea012465960e45d17dd87e371aaf91455469a5b42321

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbaf91ec2b411d54245a05505e3fcefdebe13870f9fab72c908ca9be2e04e979",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-04-26T16:22:46Z",
    "title_canon_sha256": "3d6591df40bedc01a8c7f31034d3f885969b702c6d9e39be76f65d7717daa628"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7218",
    "kind": "arxiv",
    "version": 1
  }
}