Pith Number

pith:W3SYKVUZ

pith:2021:W3SYKVUZBQJBTC5DNAIAVXQEQ2

not attested not anchored not stored refs pending

Nonlinear Discrete-time System Identification without Persistence of Excitation: Finite-time Concurrent Learning Methods

Christos Panayiotou, Farzaneh Tatari, Marios Polycarpou

arxiv:2112.07765 v2 · 2021-12-14 · eess.SY · cs.LG · cs.SY · 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{W3SYKVUZBQJBTC5DNAIAVXQEQ2}

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	2026-07-05T04:23:22.892747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6e58556990c12198ba368100ade0486926037d6d91f7a61de072c68a3a36664

Aliases

arxiv: 2112.07765 · arxiv_version: 2112.07765v2 · doi: 10.48550/arxiv.2112.07765 · pith_short_12: W3SYKVUZBQJB · pith_short_16: W3SYKVUZBQJBTC5D · pith_short_8: W3SYKVUZ

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/W3SYKVUZBQJBTC5DNAIAVXQEQ2 \
  | 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: b6e58556990c12198ba368100ade0486926037d6d91f7a61de072c68a3a36664

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f19a857fa9e86948f582ed8620b02776d5449e268186bae8311a4285eb77637b",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.SY",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2021-12-14T22:19:20Z",
    "title_canon_sha256": "264d4b746e599192d7584773a434826e29ba753e7731ca4d5126aee7d88c75f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.07765",
    "kind": "arxiv",
    "version": 2
  }
}