Pith Number

pith:BYP3VPTY

pith:2020:BYP3VPTY5EIE44VLQI47TP2WQ3

not attested not anchored not stored refs pending

Guaranteed two-sided bounds on all eigenvalues of preconditioned diffusion and elasticity problems solved by the finite element method

Ivana Pultarov\'a, Jan Zeman, Martin Ladeck\'y

arxiv:2001.03673 v1 · 2020-01-10 · 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{BYP3VPTY5EIE44VLQI47TP2WQ3}

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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	2026-07-05T04:02:12.795175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e1fbabe78e9104e72ab8239f9bf5686ce1c6ee4ab9de07720068f2014670680

Aliases

arxiv: 2001.03673 · arxiv_version: 2001.03673v1 · doi: 10.48550/arxiv.2001.03673 · pith_short_12: BYP3VPTY5EIE · pith_short_16: BYP3VPTY5EIE44VL · pith_short_8: BYP3VPTY

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/BYP3VPTY5EIE44VLQI47TP2WQ3 \
  | 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: 0e1fbabe78e9104e72ab8239f9bf5686ce1c6ee4ab9de07720068f2014670680

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d9f651e7e54a2eb9f85b19d02d16dfdd65cdc7d10dc8578b7f734fdca64e0ff",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-01-10T21:56:50Z",
    "title_canon_sha256": "9f71599270a075dba6fe7d6307fb3248bf70e46cbca857a346221528a632fdf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.03673",
    "kind": "arxiv",
    "version": 1
  }
}