Pith Number

pith:OZD3EKZI

pith:2010:OZD3EKZIJESIMJVPWSUIQAHKQF

not attested not anchored not stored refs pending

Estimates for the Spectral Condition Number of Cardinal B-Spline Collocation Matrices (Long version)

Sanja Singer, Sasa Singer, Vedran Novakovic

arxiv:1004.4014 v1 · 2010-04-22 · 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{OZD3EKZIJESIMJVPWSUIQAHKQF}

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	2026-05-18T04:34:10.107201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7647b22b2849248626afb4a88800ea814f2476cd992913789d32575b0da106da

Aliases

arxiv: 1004.4014 · arxiv_version: 1004.4014v1 · doi: 10.48550/arxiv.1004.4014 · pith_short_12: OZD3EKZIJESI · pith_short_16: OZD3EKZIJESIMJVP · pith_short_8: OZD3EKZI

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/OZD3EKZIJESIMJVPWSUIQAHKQF \
  | 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: 7647b22b2849248626afb4a88800ea814f2476cd992913789d32575b0da106da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6991cda59b7419469e5a204ba2b2125c486a1b345e86b585b59f553efe3daac4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2010-04-22T21:10:03Z",
    "title_canon_sha256": "3ec99f9320dca32a08b0bf6f15b5ab3846de991013a4b55f5db2914ec58fddc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4014",
    "kind": "arxiv",
    "version": 1
  }
}