Pith Number

pith:RGAG5GF4

pith:2021:RGAG5GF4E6VNQCL3QIBTEQKO5T

not attested not anchored not stored refs pending

Resolvent-based approach for H2-optimal estimation and control: an application to the cylinder flow

Bo Jin, Richard D. Sandberg, Simon J. Illingworth

arxiv:2105.04927 v1 · 2021-05-11 · math.OC · 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{RGAG5GF4E6VNQCL3QIBTEQKO5T}

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	2026-07-05T04:21:45.582431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89806e98bc27aad8097b820332414eecc58cb768a55a7212b413eecc7292743a

Aliases

arxiv: 2105.04927 · arxiv_version: 2105.04927v1 · doi: 10.48550/arxiv.2105.04927 · pith_short_12: RGAG5GF4E6VN · pith_short_16: RGAG5GF4E6VNQCL3 · pith_short_8: RGAG5GF4

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/RGAG5GF4E6VNQCL3QIBTEQKO5T \
  | 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: 89806e98bc27aad8097b820332414eecc58cb768a55a7212b413eecc7292743a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e23d39ca3e49c0fb236cf787f21ef5f0b8c42d05af2f35573fb87deea230f3e6",
    "cross_cats_sorted": [
      "physics.flu-dyn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-05-11T10:32:46Z",
    "title_canon_sha256": "d9a08282b8984a38a04c9da1877b48503c0ad1dd21411b0cea3b5640a0ac4d2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.04927",
    "kind": "arxiv",
    "version": 1
  }
}