Pith Number

pith:4XTIUOIB

pith:2013:4XTIUOIBFEFG4QD6SYOTLTLJEZ

not attested not anchored not stored refs pending

A well-conditioned collocation method using pseudospectral integration matrix

Li-Lian Wang, Michael Daniel Samson, Xiaodan Zhao

arxiv:1305.2041 v2 · 2013-05-09 · 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{4XTIUOIBFEFG4QD6SYOTLTLJEZ}

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	2026-05-18T03:24:53.623926Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5e68a3901290a6e407e961d35cd69264a111f3d4724abadec7a7443ee2fb137

Aliases

arxiv: 1305.2041 · arxiv_version: 1305.2041v2 · doi: 10.48550/arxiv.1305.2041 · pith_short_12: 4XTIUOIBFEFG · pith_short_16: 4XTIUOIBFEFG4QD6 · pith_short_8: 4XTIUOIB

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/4XTIUOIBFEFG4QD6SYOTLTLJEZ \
  | 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: e5e68a3901290a6e407e961d35cd69264a111f3d4724abadec7a7443ee2fb137

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b65d48e7653e58240059aebddbc7cc6f816dc7dc7d5abcd5e231465334a0ffba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-05-09T09:28:46Z",
    "title_canon_sha256": "0a51af1247a7e5c283d0e9cf84ad173c5d63642c1d805662381452650465bfdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2041",
    "kind": "arxiv",
    "version": 2
  }
}