Pith Number

pith:LHPO7JWZ

pith:2017:LHPO7JWZB6XIIFRXHCRDOK6NLQ

not attested not anchored not stored refs pending

A Non-Convex Relaxation for Fixed-Rank Approximation

Carl Olsson, Erik Bylow, Marcus Carlsson

arxiv:1706.05855 v2 · 2017-06-19 · 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{LHPO7JWZB6XIIFRXHCRDOK6NLQ}

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	2026-05-18T00:30:54.779112Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59deefa6d90fae84163738a2372bcd5c2e16c12ba28ed464d96916a3806b37b2

Aliases

arxiv: 1706.05855 · arxiv_version: 1706.05855v2 · doi: 10.48550/arxiv.1706.05855 · pith_short_12: LHPO7JWZB6XI · pith_short_16: LHPO7JWZB6XIIFRX · pith_short_8: LHPO7JWZ

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/LHPO7JWZB6XIIFRXHCRDOK6NLQ \
  | 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: 59deefa6d90fae84163738a2372bcd5c2e16c12ba28ed464d96916a3806b37b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e1e13c7deb00db9ebcb8399fa760ee2ad28d8f3f2c7157967d3422c3eda39c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-06-19T09:57:16Z",
    "title_canon_sha256": "7cc069e2336f646fcd631a4e79d94887a4b92738ab709ee7dd14b631fa87f533"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05855",
    "kind": "arxiv",
    "version": 2
  }
}