Pith Number

pith:WHY4OYP6

pith:2017:WHY4OYP6OD5JDQMF7PMN2FWJWX

not attested not anchored not stored refs pending

Iterative methods for solving factorized linear systems

Aaditya Ramdas, Anna Ma, Deanna Needell

arxiv:1701.07453 v4 · 2017-01-25 · 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{WHY4OYP6OD5JDQMF7PMN2FWJWX}

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	2026-05-17T23:56:43.222622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1f1c761fe70fa91c185fbd8dd16c9b5daf5b0333132f7113e4296a8a63feaf2

Aliases

arxiv: 1701.07453 · arxiv_version: 1701.07453v4 · doi: 10.48550/arxiv.1701.07453 · pith_short_12: WHY4OYP6OD5J · pith_short_16: WHY4OYP6OD5JDQMF · pith_short_8: WHY4OYP6

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/WHY4OYP6OD5JDQMF7PMN2FWJWX \
  | 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: b1f1c761fe70fa91c185fbd8dd16c9b5daf5b0333132f7113e4296a8a63feaf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24180d092b09e5d359ea9da5dcd2b6a02b8cfd5c3f68466162d1b9946c6f5819",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-01-25T19:13:49Z",
    "title_canon_sha256": "e35dff0c691b592f2d42f44d34fc6d3dfc07a0a7271fc6f12f9ca37f60b9e9c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.07453",
    "kind": "arxiv",
    "version": 4
  }
}