Pith Number

pith:SW6YFRXF

pith:2008:SW6YFRXFZJ4J2PAJUCGUFL6UXZ

not attested not anchored not stored refs pending

On regularization methods of EM-Kaczmarz type

Antonio Leitao, Elena Resmerita, Markus Haltmeier

arxiv:0810.3619 v1 · 2008-10-20 · math.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{SW6YFRXFZJ4J2PAJUCGUFL6UXZ}

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	2026-05-18T02:15:23.885585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95bd82c6e5ca789d3c09a08d42afd4be5948fd6906264831f0556aaba82ec2c9

Aliases

arxiv: 0810.3619 · arxiv_version: 0810.3619v1 · doi: 10.48550/arxiv.0810.3619 · pith_short_12: SW6YFRXFZJ4J · pith_short_16: SW6YFRXFZJ4J2PAJ · pith_short_8: SW6YFRXF

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/SW6YFRXFZJ4J2PAJUCGUFL6UXZ \
  | 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: 95bd82c6e5ca789d3c09a08d42afd4be5948fd6906264831f0556aaba82ec2c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b81e59fd2202755a3d8bacdcc3b506d0b4909b09f311e276bb57d3de951d0ee2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-10-20T17:47:12Z",
    "title_canon_sha256": "3c6ffb983184bc57a4f70e10fcb6f89c733dedb5ec47eec2a607751039afb5b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3619",
    "kind": "arxiv",
    "version": 1
  }
}