Pith Number

pith:P2HPWMXB

pith:2019:P2HPWMXBMGNJY6K63SNILZYOEI

not attested not anchored not stored refs pending

Shadowing the rotating annulus. Part II: Gradient descent in the perfect model scenario

Falk Nieh\"orster, Leonard A. Smith, Peter L. Read, Roland M. B. Young, Roman Binter

arxiv:1909.05906 v1 · 2019-09-11 · physics.data-an · math.DS · nlin.CD · physics.ao-ph · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P2HPWMXBMGNJY6K63SNILZYOEI}

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	2026-07-05T00:04:30.721232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e8efb32e1619a9c795edc9a85e70e2208fb123446cba342570adc1684acca3f

Aliases

arxiv: 1909.05906 · arxiv_version: 1909.05906v1 · doi: 10.48550/arxiv.1909.05906 · pith_short_12: P2HPWMXBMGNJ · pith_short_16: P2HPWMXBMGNJY6K6 · pith_short_8: P2HPWMXB

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/P2HPWMXBMGNJY6K63SNILZYOEI \
  | 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: 7e8efb32e1619a9c795edc9a85e70e2208fb123446cba342570adc1684acca3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "062ac4a3d219c79746d03641d3e1efb4e540ab67594ea37ac9f6552d1310aef8",
    "cross_cats_sorted": [
      "math.DS",
      "nlin.CD",
      "physics.ao-ph",
      "physics.flu-dyn"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2019-09-11T07:21:31Z",
    "title_canon_sha256": "bcb8bd9a9915c97bf523de6372e2e7cb6a44d73d87fa5dcfcd5296efb3ceda5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.05906",
    "kind": "arxiv",
    "version": 1
  }
}