Pith Number

pith:VGQMBM4J

pith:2019:VGQMBM4JRFGUXWUXYCZHNNRB4W

not attested not anchored not stored refs pending

Contraction Metrics in Adaptive Nonlinear Control

Brett T. Lopez, Jean-Jacques E. Slotine

arxiv:1912.13138 v2 · 2019-12-31 · eess.SY · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VGQMBM4JRFGUXWUXYCZHNNRB4W}

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	2026-07-05T00:41:01.964522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9a0c0b389894d4bda97c0b276b621e5ac5614f7d40e214299d8ee54a59d8e2e

Aliases

arxiv: 1912.13138 · arxiv_version: 1912.13138v2 · doi: 10.48550/arxiv.1912.13138 · pith_short_12: VGQMBM4JRFGU · pith_short_16: VGQMBM4JRFGUXWUX · pith_short_8: VGQMBM4J

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/VGQMBM4JRFGUXWUXYCZHNNRB4W \
  | 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: a9a0c0b389894d4bda97c0b276b621e5ac5614f7d40e214299d8ee54a59d8e2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e410bc1b8c5c127e0c23e2fce325453d3400b9c9310c91120cddbd5719c691a",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2019-12-31T01:49:06Z",
    "title_canon_sha256": "d96b99f1d30146f1ddb8d589d5b12c1a198e54d1414302410a22bb64ecc61f0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.13138",
    "kind": "arxiv",
    "version": 2
  }
}