Pith Number

pith:QSWPU464

pith:2018:QSWPU464QQJMCTFRQTLZDQT25H

not attested not anchored not stored refs pending

Structure-preserving $H^2$ optimal model reduction based on Riemannian trust-region method

Hiroyuki Sato, Kazuhiro Sato

arxiv:1803.04097 v1 · 2018-03-12 · 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{QSWPU464QQJMCTFRQTLZDQT25H}

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	2026-05-18T00:21:32.655281Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84acfa73dc8412c14cb184d791c27ae9f7ef261e2da26a6a60d7a7705747db65

Aliases

arxiv: 1803.04097 · arxiv_version: 1803.04097v1 · doi: 10.48550/arxiv.1803.04097 · pith_short_12: QSWPU464QQJM · pith_short_16: QSWPU464QQJMCTFR · pith_short_8: QSWPU464

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/QSWPU464QQJMCTFRQTLZDQT25H \
  | 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: 84acfa73dc8412c14cb184d791c27ae9f7ef261e2da26a6a60d7a7705747db65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d22a653bdafdeab15aef1feb7adc5ccf86dba913133242e46459ab0b969e6bb6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-03-12T02:48:13Z",
    "title_canon_sha256": "1c466e5bd12be8742c5f97e4e594bbe2c27ddad23e66ad7a59bc98e79a5f60f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.04097",
    "kind": "arxiv",
    "version": 1
  }
}