Pith Number

pith:MGAX62PW

pith:2021:MGAX62PWUAOUQXMJUAQPXJEU4U

not attested not anchored not stored refs pending

Difference of convex algorithms for bilevel programs with applications in hyperparameter selection

Jane J. Ye, Jin Zhang, Shangzhi Zeng, Xiaoming Yuan

arxiv:2102.09006 v2 · 2021-02-17 · 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{MGAX62PWUAOUQXMJUAQPXJEU4U}

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	2026-07-05T04:51:52.065153Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61817f69f6a01d485d89a020fba494e507981266c06699d4125b9ddd73a08964

Aliases

arxiv: 2102.09006 · arxiv_version: 2102.09006v2 · doi: 10.48550/arxiv.2102.09006 · pith_short_12: MGAX62PWUAOU · pith_short_16: MGAX62PWUAOUQXMJ · pith_short_8: MGAX62PW

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/MGAX62PWUAOUQXMJUAQPXJEU4U \
  | 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: 61817f69f6a01d485d89a020fba494e507981266c06699d4125b9ddd73a08964

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5464e39637742b3043ca832cf437327daa7cbe05cc61ef6b8ffb9101e1c6df83",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-02-17T19:58:29Z",
    "title_canon_sha256": "c477b8a6945230c9080524ac5a0acd9a6af53fbb977ecf7f2e7df21de2d6c759"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.09006",
    "kind": "arxiv",
    "version": 2
  }
}