Pith Number

pith:E2YTBDHU

pith:2011:E2YTBDHUSHVHBFZJ6RA7FUUXNZ

not attested not anchored not stored refs pending

Infeasibility certificates for linear matrix inequalities

Igor Klep, Markus Schweighofer

arxiv:1108.5930 v1 · 2011-08-30 · math.OC · math.AG · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E2YTBDHUSHVHBFZJ6RA7FUUXNZ}

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	2026-05-18T04:01:11.417282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26b1308cf491ea709729f441f2d2976e4b9a6c53ca4e7ad5de6b361cefdcfc45

Aliases

arxiv: 1108.5930 · arxiv_version: 1108.5930v1 · doi: 10.48550/arxiv.1108.5930 · pith_short_12: E2YTBDHUSHVH · pith_short_16: E2YTBDHUSHVHBFZJ · pith_short_8: E2YTBDHU

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/E2YTBDHUSHVHBFZJ6RA7FUUXNZ \
  | 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: 26b1308cf491ea709729f441f2d2976e4b9a6c53ca4e7ad5de6b361cefdcfc45

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19ca4a3b2b9d2b0facfd7e7b0f81918839efc552eabf072705445241a169267a",
    "cross_cats_sorted": [
      "math.AG",
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2011-08-30T11:49:16Z",
    "title_canon_sha256": "82b36b00fa5a9ace3343e94cad1019b211cc04f8ab16230f536383f4e765750d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5930",
    "kind": "arxiv",
    "version": 1
  }
}