Pith Number

pith:VRLT4PYY

pith:2023:VRLT4PYYZKAYKSN62WYLPCRJDI

not attested not anchored not stored refs pending

An active-set based recursive approach for solving convex isotonic regression with generalized order restrictions

Xudong Li, Xuyu Chen, Yangfeng Su

arxiv:2304.00244 v1 · 2023-04-01 · math.OC · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VRLT4PYYZKAYKSN62WYLPCRJDI}

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	2026-07-05T05:57:00.336605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac573e3f18ca818549bed5b0b78a291a0f36c7d0f7fe33eaad37b8d6334927e4

Aliases

arxiv: 2304.00244 · arxiv_version: 2304.00244v1 · doi: 10.48550/arxiv.2304.00244 · pith_short_12: VRLT4PYYZKAY · pith_short_16: VRLT4PYYZKAYKSN6 · pith_short_8: VRLT4PYY

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/VRLT4PYYZKAYKSN62WYLPCRJDI \
  | 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: ac573e3f18ca818549bed5b0b78a291a0f36c7d0f7fe33eaad37b8d6334927e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df31c131ef044651e9c2c435d05ee96f7699fbbf3f74c54b550f64f8d31d6a85",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2023-04-01T06:48:36Z",
    "title_canon_sha256": "a7fdac4567d13c5de1c9411864538dc5db73d947054e3f63bdd5aada36e28d5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2304.00244",
    "kind": "arxiv",
    "version": 1
  }
}