Pith Number

pith:XISEND4Y

pith:2011:XISEND4YOFHFPVRRWKCEM752QK

not attested not anchored not stored refs pending

Synthesis of anisotropic suboptimal controllers by convex optimization

Alexander P. Kurdyukov, Michael M. Tchaikovsky, Victor N. Timin

arxiv:1108.4982 v4 · 2011-08-25 · cs.SY · 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{XISEND4YOFHFPVRRWKCEM752QK}

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	2026-05-18T02:21:37.074823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba24468f98714e57d631b284467fba82a073ec49db880dc8e4f7ebbe2513aeb4

Aliases

arxiv: 1108.4982 · arxiv_version: 1108.4982v4 · doi: 10.48550/arxiv.1108.4982 · pith_short_12: XISEND4YOFHF · pith_short_16: XISEND4YOFHFPVRR · pith_short_8: XISEND4Y

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/XISEND4YOFHFPVRRWKCEM752QK \
  | 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: ba24468f98714e57d631b284467fba82a073ec49db880dc8e4f7ebbe2513aeb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cae82b0266318d0c0fcf01c72a7419c885aaa27138bf2e7b7916864593da920",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2011-08-25T01:25:36Z",
    "title_canon_sha256": "6340ad8048f128bdb15541f1f4aae8be903277d58d3c13e3f39126df583b1a4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4982",
    "kind": "arxiv",
    "version": 4
  }
}