Pith Number

pith:4VVIRIIT

pith:2018:4VVIRIITUN4IQB66ZNTDDSQB5K

not attested not anchored not stored refs pending

$\mathcal{H}_2$ Pseudo-Optimal Reduction of Structured DAEs by Rational Interpolation

Alessandro Castagnotto, Boris Lohmann, Philipp Seiwald, Tatjana Stykel

arxiv:1804.08755 v1 · 2018-04-23 · 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{4VVIRIITUN4IQB66ZNTDDSQB5K}

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	2026-05-18T00:17:37.454521Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e56a88a113a3788807decb6631ca01eab26243995d6b45c9002ef606ad56886e

Aliases

arxiv: 1804.08755 · arxiv_version: 1804.08755v1 · doi: 10.48550/arxiv.1804.08755 · pith_short_12: 4VVIRIITUN4I · pith_short_16: 4VVIRIITUN4IQB66 · pith_short_8: 4VVIRIIT

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/4VVIRIITUN4IQB66ZNTDDSQB5K \
  | 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: e56a88a113a3788807decb6631ca01eab26243995d6b45c9002ef606ad56886e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5df785663c3bf40eb4ea95c6782224bd080583cb13b39fc02c1a2d28e7d98eba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-04-23T21:54:56Z",
    "title_canon_sha256": "8877e72e312e84881e2edd6e1ebdc4c1c4c3b90cc2727aa4f228742a0c871396"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08755",
    "kind": "arxiv",
    "version": 1
  }
}