Pith Number

pith:2QTSXS7E

pith:2021:2QTSXS7E2WKNIFDRKM7OSTJYGT

not attested not anchored not stored refs pending

An inexact proximal DC algorithm with sieving strategy for rank constrained least squares semidefinite programming

Bo Yu, Mingcai Ding, Xiaoliang Song

arxiv:2105.12389 v1 · 2021-05-26 · 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{2QTSXS7E2WKNIFDRKM7OSTJYGT}

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	2026-07-05T02:43:38.337144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4272bcbe4d594d41471533ee94d3834fc209489a5db79e2c7975351f8b471d6

Aliases

arxiv: 2105.12389 · arxiv_version: 2105.12389v1 · doi: 10.48550/arxiv.2105.12389 · pith_short_12: 2QTSXS7E2WKN · pith_short_16: 2QTSXS7E2WKNIFDR · pith_short_8: 2QTSXS7E

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/2QTSXS7E2WKNIFDRKM7OSTJYGT \
  | 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: d4272bcbe4d594d41471533ee94d3834fc209489a5db79e2c7975351f8b471d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33215a85a54d0868f47249ba9581cef47b34ebe999f8f279b3756d70194075f0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-05-26T08:23:04Z",
    "title_canon_sha256": "af129fcf4279e67741279ce9ba1afd2da8ea26904f477db1be3e71efb9f910d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.12389",
    "kind": "arxiv",
    "version": 1
  }
}