Pith Number

pith:QUGR6EGT

pith:2012:QUGR6EGTG7YCIJLVF3LZTD2IFF

not attested not anchored not stored refs pending

Recovering the Optimal Solution by Dual Random Projection

Lijun Zhang, Mehrdad Mahdavi, Rong Jin, Shenghuo Zhu, Tianbao Yang

arxiv:1211.3046 v4 · 2012-11-13 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QUGR6EGTG7YCIJLVF3LZTD2IFF}

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	2026-05-18T02:58:23.688471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

850d1f10d337f02425752ed7998f48297f75ef53351b5fab695c69e1e32aca32

Aliases

arxiv: 1211.3046 · arxiv_version: 1211.3046v4 · doi: 10.48550/arxiv.1211.3046 · pith_short_12: QUGR6EGTG7YC · pith_short_16: QUGR6EGTG7YCIJLV · pith_short_8: QUGR6EGT

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/QUGR6EGTG7YCIJLVF3LZTD2IFF \
  | 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: 850d1f10d337f02425752ed7998f48297f75ef53351b5fab695c69e1e32aca32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50ba1a82f3b3fcd18ca0920a05e6ec0ed108c243a71132246c10a778f5c8a8ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-11-13T16:39:45Z",
    "title_canon_sha256": "b0a73d57c88afd6394f31822591c159794f58d42aa1b17f479d41df54993b0b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3046",
    "kind": "arxiv",
    "version": 4
  }
}