Pith Number

pith:MD3S3EU2

pith:2019:MD3S3EU2BBLDWFDKM2V3VSNWCB

not attested not anchored not stored refs pending

Preconditioning Kaczmarz method by sketching

Alexandr Katrutsa, Ivan Oseledets

arxiv:1903.01806 v1 · 2019-03-05 · 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{MD3S3EU2BBLDWFDKM2V3VSNWCB}

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	2026-05-17T23:51:59.701839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60f72d929a08563b146a66abbac9b61040257263872de80cd5bd7187935675ee

Aliases

arxiv: 1903.01806 · arxiv_version: 1903.01806v1 · doi: 10.48550/arxiv.1903.01806 · pith_short_12: MD3S3EU2BBLD · pith_short_16: MD3S3EU2BBLDWFDK · pith_short_8: MD3S3EU2

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/MD3S3EU2BBLDWFDKM2V3VSNWCB \
  | 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: 60f72d929a08563b146a66abbac9b61040257263872de80cd5bd7187935675ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c10d8d16212acf79f122dd34eca4766306f67c383e8d638080ead077cae78e42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2019-03-05T13:11:08Z",
    "title_canon_sha256": "76760867a49d37d2c579795534b431db2a3459a93dfc8e1de9f07a787fdfa6d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.01806",
    "kind": "arxiv",
    "version": 1
  }
}