Pith Number

pith:SPRRDE4D

pith:2026:SPRRDE4D243HQO3AE2W2QWMP46

not attested not anchored not stored refs pending

Funnel control with input filter for nonlinear systems with arbitrary relative degree

Janina Schaa, Thomas Berger

arxiv:2605.19777 v1 · 2026-05-19 · 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{SPRRDE4D243HQO3AE2W2QWMP46}

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	2026-05-20T01:06:13.264402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93e3119383d736783b6026ada8598fe785a566b6403bd580d1e9732f391d3592

Aliases

arxiv: 2605.19777 · arxiv_version: 2605.19777v1 · doi: 10.48550/arxiv.2605.19777 · pith_short_12: SPRRDE4D243H · pith_short_16: SPRRDE4D243HQO3A · pith_short_8: SPRRDE4D

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/SPRRDE4D243HQO3AE2W2QWMP46 \
  | 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: 93e3119383d736783b6026ada8598fe785a566b6403bd580d1e9732f391d3592

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "853721404a874ad6d08c4a19b8a45d42c1403349cb2eefb7e992657ade765720",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-05-19T12:44:43Z",
    "title_canon_sha256": "55a390e603896d0c7999ac93f962a16bd19364f8f07d090392ca122fa1d34853"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.19777",
    "kind": "arxiv",
    "version": 1
  }
}