Pith Number

pith:F3YSXAS5

pith:2017:F3YSXAS5XEJZKOVDU6GFZI6K25

not attested not anchored not stored refs pending

Numerical low-rank approximation of matrix differential equations

Alexander Ostermann, Chiara Piazzola, Hermann Mena, Lena-Maria Pfurtscheller

arxiv:1705.10175 v2 · 2017-05-29 · 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{F3YSXAS5XEJZKOVDU6GFZI6K25}

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	2026-05-18T00:25:34.370651Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ef12b825db913953aa3a78c5ca3cad7543006455601bbde692f0d86d487d6d0

Aliases

arxiv: 1705.10175 · arxiv_version: 1705.10175v2 · doi: 10.48550/arxiv.1705.10175 · pith_short_12: F3YSXAS5XEJZ · pith_short_16: F3YSXAS5XEJZKOVD · pith_short_8: F3YSXAS5

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/F3YSXAS5XEJZKOVDU6GFZI6K25 \
  | 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: 2ef12b825db913953aa3a78c5ca3cad7543006455601bbde692f0d86d487d6d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f8d2cf6f94b3d42a7a93464e1534fb78baa393edc4e0f97c27be4d9b6ce1e19",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-05-29T13:29:46Z",
    "title_canon_sha256": "51cbfd64d257cbcba3628f3f73874f340dd23e0601e233fc2cd77b044f761ff1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10175",
    "kind": "arxiv",
    "version": 2
  }
}