Pith Number

pith:FW37YTRL

pith:2012:FW37YTRLJU2WQYITOHAZ3WPLKR

not attested not anchored not stored refs pending

Polynomial-sized Semidefinite Representations of Derivative Relaxations of Spectrahedral Cones

James Saunderson, Pablo A. Parrilo

arxiv:1208.1443 v4 · 2012-08-07 · 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{FW37YTRLJU2WQYITOHAZ3WPLKR}

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	2026-05-18T00:58:42.892009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2db7fc4e2b4d3568611371c19dd9eb547b7fae93d0abd760d464ee964440c42d

Aliases

arxiv: 1208.1443 · arxiv_version: 1208.1443v4 · doi: 10.48550/arxiv.1208.1443 · pith_short_12: FW37YTRLJU2W · pith_short_16: FW37YTRLJU2WQYIT · pith_short_8: FW37YTRL

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/FW37YTRLJU2WQYITOHAZ3WPLKR \
  | 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: 2db7fc4e2b4d3568611371c19dd9eb547b7fae93d0abd760d464ee964440c42d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84c43f02ebbb041cfb058afa1dbbd7a2b0d64d4c6499eea77330de54c68376f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-08-07T15:21:41Z",
    "title_canon_sha256": "13730a1db16af405b15c4fd321d86796b41ceaf7040fade1e48d2f9f2a819ca3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.1443",
    "kind": "arxiv",
    "version": 4
  }
}