Pith Number

pith:MRKKFQGW

pith:2015:MRKKFQGWFFRL4NDK2JIYMQPEDO

not attested not anchored not stored refs pending

Nonlinear Model Reduction for Complex Systems using Sparse Optimal Sensor Locations from Learned Nonlinear Libraries

J. Nathan Kutz, Steven L. Brunton, Syuzanna Sargsyan

arxiv:1501.04590 v1 · 2015-01-19 · nlin.PS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MRKKFQGWFFRL4NDK2JIYMQPEDO}

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	2026-05-18T01:29:03.854654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6454a2c0d62962be346ad2518641e41bada0cfb110b4aa312297ce4b08116f7b

Aliases

arxiv: 1501.04590 · arxiv_version: 1501.04590v1 · doi: 10.48550/arxiv.1501.04590 · pith_short_12: MRKKFQGWFFRL · pith_short_16: MRKKFQGWFFRL4NDK · pith_short_8: MRKKFQGW

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/MRKKFQGWFFRL4NDK2JIYMQPEDO \
  | 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: 6454a2c0d62962be346ad2518641e41bada0cfb110b4aa312297ce4b08116f7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e6cddf25900f0cdd227d28e341ff5b52fda1156a640968a73339d974c62a542",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.PS",
    "submitted_at": "2015-01-19T19:01:49Z",
    "title_canon_sha256": "e0854a82cc2deb1d3a2d60c050076d9916fe3753a0ff313d0f93417a5a63a777"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04590",
    "kind": "arxiv",
    "version": 1
  }
}