Pith Number

pith:UMWDXLMR

pith:2011:UMWDXLMRT3KNC5FBDUO7MTD7MM

not attested not anchored not stored refs pending

Bad semidefinite programs: they all look the same

Gabor Pataki

arxiv:1112.1436 v6 · 2011-12-06 · 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{UMWDXLMRT3KNC5FBDUO7MTD7MM}

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	2026-05-18T00:50:24.012951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a32c3bad919ed4d174a11d1df64c7f6338635aa61a23942068a33a8b584068ef

Aliases

arxiv: 1112.1436 · arxiv_version: 1112.1436v6 · doi: 10.48550/arxiv.1112.1436 · pith_short_12: UMWDXLMRT3KN · pith_short_16: UMWDXLMRT3KNC5FB · pith_short_8: UMWDXLMR

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/UMWDXLMRT3KNC5FBDUO7MTD7MM \
  | 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: a32c3bad919ed4d174a11d1df64c7f6338635aa61a23942068a33a8b584068ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "114eb77e959a10b9cb1a8783e6a7be5363c40dfc6d4df61aa75be59913121230",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2011-12-06T22:08:55Z",
    "title_canon_sha256": "b32a25c9f8eac2c848dfdcef06a8694e6f7cd568c149128bebe9c794caa25458"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1436",
    "kind": "arxiv",
    "version": 6
  }
}