Pith Number

pith:2ZUVYJLX

pith:2017:2ZUVYJLXCOS55YYREK7HKQ3ZQ4

not attested not anchored not stored refs pending

Optimal spline spaces for $L^2$ $n$-width problems with boundary conditions

Espen Sande, Michael S. Floater

arxiv:1709.02710 v4 · 2017-09-08 · math.NA · cs.NA · math.CA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ZUVYJLXCOS55YYREK7HKQ3ZQ4}

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	2026-05-17T23:41:22.308178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6695c257713a5dee31122be75437987062e26c17c1f38ddc4be45b345fa3e1e

Aliases

arxiv: 1709.02710 · arxiv_version: 1709.02710v4 · doi: 10.48550/arxiv.1709.02710 · pith_short_12: 2ZUVYJLXCOS5 · pith_short_16: 2ZUVYJLXCOS55YYR · pith_short_8: 2ZUVYJLX

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/2ZUVYJLXCOS55YYREK7HKQ3ZQ4 \
  | 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: d6695c257713a5dee31122be75437987062e26c17c1f38ddc4be45b345fa3e1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da4b9ef603cbc8cd6e8a4f8e852d877bff41dd615376109625b63346b9304f01",
    "cross_cats_sorted": [
      "cs.NA",
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-09-08T14:08:18Z",
    "title_canon_sha256": "3bd05a0b6b0d621294b05730cb3fb64ea49e13486487f4abd28da23005b0221d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.02710",
    "kind": "arxiv",
    "version": 4
  }
}