Pith Number

pith:72PKDDJT

pith:2008:72PKDDJTRD6ARDWCWAN4QA7H3Q

not attested not anchored not stored refs pending

Subsampling Algorithms for Semidefinite Programming

Alexandre d'Aspremont

arxiv:0803.1990 v6 · 2008-03-13 · 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{72PKDDJTRD6ARDWCWAN4QA7H3Q}

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	2026-05-18T04:14:38.389173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe9ea18d3388fc088ec2b01bc803e7dc0d2115a9c9fa868f24ed97642c94cc9e

Aliases

arxiv: 0803.1990 · arxiv_version: 0803.1990v6 · doi: 10.48550/arxiv.0803.1990 · pith_short_12: 72PKDDJTRD6A · pith_short_16: 72PKDDJTRD6ARDWC · pith_short_8: 72PKDDJT

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/72PKDDJTRD6ARDWCWAN4QA7H3Q \
  | 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: fe9ea18d3388fc088ec2b01bc803e7dc0d2115a9c9fa868f24ed97642c94cc9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae4eee430b1a7990c76b6e9583f3846e45f4e61adf48a7be6f69db9df1941a41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2008-03-13T15:16:32Z",
    "title_canon_sha256": "4662e7021a29b73bebd28d3f7f7c0029059c929eeab047fd93707eebc7cf5df3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.1990",
    "kind": "arxiv",
    "version": 6
  }
}