Pith Number

pith:WT64R5R6

pith:2019:WT64R5R6USIUGIMUU25OY4LWN7

not attested not anchored not stored refs pending

Gibbs Phenomena for $L^q$-Best Approximation in Finite Element Spaces -- Some Examples

Kristoffer G. van der Zee, Paul Houston, Sarah Roggendorf

arxiv:1909.00658 v1 · 2019-09-02 · math.NA · cs.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{WT64R5R6USIUGIMUU25OY4LWN7}

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	2026-07-05T05:15:21.181964Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4fdc8f63ea491432194a6baec71766fe890d4db87be05172635c0cfafc5d758

Aliases

arxiv: 1909.00658 · arxiv_version: 1909.00658v1 · doi: 10.48550/arxiv.1909.00658 · pith_short_12: WT64R5R6USIU · pith_short_16: WT64R5R6USIUGIMU · pith_short_8: WT64R5R6

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/WT64R5R6USIUGIMUU25OY4LWN7 \
  | 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: b4fdc8f63ea491432194a6baec71766fe890d4db87be05172635c0cfafc5d758

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "586228f20cde5fc2877fbb6f1cec34e40f3ba72ff02c0628fbc7405791a9e709",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-09-02T10:48:36Z",
    "title_canon_sha256": "a6d6fdaf1f6964d769cb1a941c53a3a8f4af4c767da3bb42ab0ba46df642feb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.00658",
    "kind": "arxiv",
    "version": 1
  }
}