Pith Number

pith:PTJEIAXQ

pith:2023:PTJEIAXQIJBOBX23TVM2SI4LSW

not attested not anchored not stored refs pending

Robust asymptotic observer of motion states with nonlinear friction

Michael Ruderman

arxiv:2305.15870 v1 · 2023-05-25 · 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{PTJEIAXQIJBOBX23TVM2SI4LSW}

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	2026-07-05T06:13:57.031251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cd24402f04242e0df5b9d59a9238b9591a7eafd689c57359677f9d7bb0d00ea

Aliases

arxiv: 2305.15870 · arxiv_version: 2305.15870v1 · doi: 10.48550/arxiv.2305.15870 · pith_short_12: PTJEIAXQIJBO · pith_short_16: PTJEIAXQIJBOBX23 · pith_short_8: PTJEIAXQ

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/PTJEIAXQIJBOBX23TVM2SI4LSW \
  | 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: 7cd24402f04242e0df5b9d59a9238b9591a7eafd689c57359677f9d7bb0d00ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54006636a6bd4504a49ee627a30268352fd9cb3e5b1239a403386a914e632b58",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2023-05-25T09:04:07Z",
    "title_canon_sha256": "83d51e56389908ffcdd8fa33d42db2a7c4c27818cd761bac2fbaf3a8e4b8971f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2305.15870",
    "kind": "arxiv",
    "version": 1
  }
}