Pith Number

pith:XMXJ4FFS

pith:2018:XMXJ4FFSWELFKI7CHLCZLKHIIR

not attested not anchored not stored refs pending

Robust multigrid solvers for the biharmonic problem in isogeometric analysis

Jarle Sogn, Stefan Takacs

arxiv:1802.00220 v1 · 2018-02-01 · 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{XMXJ4FFSWELFKI7CHLCZLKHIIR}

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	2026-05-17T23:43:18.234685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb2e9e14b2b1165523e23ac595a8e8445955c5cfdf27b1d18463d430a84bedc5

Aliases

arxiv: 1802.00220 · arxiv_version: 1802.00220v1 · doi: 10.48550/arxiv.1802.00220 · pith_short_12: XMXJ4FFSWELF · pith_short_16: XMXJ4FFSWELFKI7C · pith_short_8: XMXJ4FFS

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/XMXJ4FFSWELFKI7CHLCZLKHIIR \
  | 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: bb2e9e14b2b1165523e23ac595a8e8445955c5cfdf27b1d18463d430a84bedc5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5505110afebc8c0824e283441242fb0a220db47c3d041ae8d3cc9e458af1ef9c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-02-01T10:11:02Z",
    "title_canon_sha256": "eb7ce302e7c3e7662c1123c251e0e5fb83976c62d65951f12e403aab807b9791"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00220",
    "kind": "arxiv",
    "version": 1
  }
}