Pith Number

pith:GXC7QK42

pith:2022:GXC7QK42FGWSCBBGXIL6SV2CZG

not attested not anchored not stored refs pending

Review on contraction analysis and computation of contraction metrics

Christoph Kawan, Peter Giesl, Sigurdur Hafstein

arxiv:2203.01367 v1 · 2022-03-02 · math.DS · math.CA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GXC7QK42FGWSCBBGXIL6SV2CZG}

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.

Cited by

1 paper in Pith

Perron-Frobenius Contractive Operator Matching for Data-Driven Reachable Fault Identification and Recovery

Receipt and verification

First computed	2026-07-05T04:01:47.027657Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35c5f82b9a29ad210426ba17e95742c9b7772fa44863fdeb4c6ec4f234b76b14

Aliases

arxiv: 2203.01367 · arxiv_version: 2203.01367v1 · doi: 10.48550/arxiv.2203.01367 · pith_short_12: GXC7QK42FGWS · pith_short_16: GXC7QK42FGWSCBBG · pith_short_8: GXC7QK42

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/GXC7QK42FGWSCBBGXIL6SV2CZG \
  | 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: 35c5f82b9a29ad210426ba17e95742c9b7772fa44863fdeb4c6ec4f234b76b14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ce1fe54a9b0f329bc5efdb5ff4570af1dd73e03b11ec4fc9542681ae2df26a7",
    "cross_cats_sorted": [
      "math.CA",
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2022-03-02T19:32:01Z",
    "title_canon_sha256": "9e040141bd7eb58b7a6883c0195048237a94bc6d8630b13e1612b8e9c8b7c2f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.01367",
    "kind": "arxiv",
    "version": 1
  }
}