Pith Number

pith:UFS2D645

pith:2011:UFS2D645U7LFOYLBNPVQQQLM6R

not attested not anchored not stored refs pending

Reliable a-posteriori error estimators for $hp$-adaptive finite element approximations of eigenvalue/eigenvector problems

Jeffrey Ovall, Luka Grubi\v{s}i\'c, Stefano Giani

arxiv:1112.0436 v1 · 2011-12-02 · math.NA · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UFS2D645U7LFOYLBNPVQQQLM6R}

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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	2026-05-18T01:09:21.882877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a165a1fb9da7d65761616beb08416cf46a5f23a28f8e605eb7c2fb3223083440

Aliases

arxiv: 1112.0436 · arxiv_version: 1112.0436v1 · doi: 10.48550/arxiv.1112.0436 · pith_short_12: UFS2D645U7LF · pith_short_16: UFS2D645U7LFOYLB · pith_short_8: UFS2D645

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/UFS2D645U7LFOYLBNPVQQQLM6R \
  | 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: a165a1fb9da7d65761616beb08416cf46a5f23a28f8e605eb7c2fb3223083440

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8558991465a2855bcc478bdd9eb58e331eee07ad23e27118e4975b7b53580d89",
    "cross_cats_sorted": [
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-12-02T11:53:33Z",
    "title_canon_sha256": "1a38327e18bed51914db07c40318faf752fd0054f83059fa39fa999b139f560d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.0436",
    "kind": "arxiv",
    "version": 1
  }
}