Pith Number

pith:K4632EH4

pith:2020:K4632EH4FTH3TCXQ6USRFQK6N4

not attested not anchored not stored refs pending

Mesh Independence of a Majorized ABCD Method for Sparse PDE-constrained Optimization Problems

Defeng Sun, Kim-Chuan Toh, Xiaoliang Song

arxiv:2001.02118 v1 · 2020-01-04 · 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{K4632EH4FTH3TCXQ6USRFQK6N4}

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	2026-07-05T00:30:44.455206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

573dbd10fc2ccfb98af0f52512c15e6f2f0df154b26179825fe37f38c0637385

Aliases

arxiv: 2001.02118 · arxiv_version: 2001.02118v1 · doi: 10.48550/arxiv.2001.02118 · pith_short_12: K4632EH4FTH3 · pith_short_16: K4632EH4FTH3TCXQ · pith_short_8: K4632EH4

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/K4632EH4FTH3TCXQ6USRFQK6N4 \
  | 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: 573dbd10fc2ccfb98af0f52512c15e6f2f0df154b26179825fe37f38c0637385

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aef62994c3e3924015751ca6c6cd4dfee3c3e24028f026b6a1e827059c5f9ddc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-01-04T03:20:13Z",
    "title_canon_sha256": "47a2b7ea6ec6e757e2c5b8a90140ebc714d9d6dbd0ea09d1c50a448b8856fab8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.02118",
    "kind": "arxiv",
    "version": 1
  }
}