Pith Number

pith:IGYYYRBY

pith:2018:IGYYYRBY3OPVDDSWR5THEHAJFB

not attested not anchored not stored refs pending

Feedback control of parametrized PDEs via model order reduction and dynamic programming principle

Alessandro Alla, Andreas Schmidt, Bernard Haasdonk

arxiv:1810.00021 v1 · 2018-09-28 · math.OC · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IGYYYRBY3OPVDDSWR5THEHAJFB}

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	2026-05-18T00:04:29.037121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41b18c4438db9f518e568f66721c09285f08f00e059659e62eb17b3ba4aa80d2

Aliases

arxiv: 1810.00021 · arxiv_version: 1810.00021v1 · doi: 10.48550/arxiv.1810.00021 · pith_short_12: IGYYYRBY3OPV · pith_short_16: IGYYYRBY3OPVDDSW · pith_short_8: IGYYYRBY

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/IGYYYRBY3OPVDDSWR5THEHAJFB \
  | 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: 41b18c4438db9f518e568f66721c09285f08f00e059659e62eb17b3ba4aa80d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86153600a26950229f284b3dd7646e4bef53070570123b9a506d7a25a435ea2e",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-09-28T18:07:13Z",
    "title_canon_sha256": "bb5714a13324ba361e9392c55fccb27f382fb492a958b38eeaf9bcdb481843e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.00021",
    "kind": "arxiv",
    "version": 1
  }
}