Pith Number

pith:45W6HQIC

pith:2019:45W6HQIC5GRJ726RUK3YJYKVUT

not attested not anchored not stored refs pending

Analysis of the Block Coordinate Descent Method for Linear Ill-Posed Problems

Lukas Neumann, Markus Haltmeier, Simon Rabanser

arxiv:1902.04794 v2 · 2019-02-13 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{45W6HQIC5GRJ726RUK3YJYKVUT}

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	2026-05-17T23:39:30.457892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e76de3c102e9a29febd1a2b784e155a4e5d91a5959d7ca21053b94a8bf698648

Aliases

arxiv: 1902.04794 · arxiv_version: 1902.04794v2 · doi: 10.48550/arxiv.1902.04794 · pith_short_12: 45W6HQIC5GRJ · pith_short_16: 45W6HQIC5GRJ726R · pith_short_8: 45W6HQIC

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/45W6HQIC5GRJ726RUK3YJYKVUT \
  | 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: e76de3c102e9a29febd1a2b784e155a4e5d91a5959d7ca21053b94a8bf698648

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b43fd61744b043820fc2f851c31faf2b0029190d0744cbfc00438c11731d3b4",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-02-13T09:00:19Z",
    "title_canon_sha256": "ac9eb17b7a5199d85a293d80b72ac6429d626c4f40d22ac3b5d7885ab79bf537"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04794",
    "kind": "arxiv",
    "version": 2
  }
}