Pith Number

pith:OGZ7RAKF

pith:2026:OGZ7RAKFFSZVNHQUYHIWLZUOYH

not attested not anchored not stored refs pending

A Scalable Deflated Conjugate Gradient Solver for the Time-Dependent Pseudo-Stress Stokes Problem

Alessandra Cancrini, Gabriele Ciaramella, Paola F. Antonietti

arxiv:2606.13429 v1 · 2026-06-11 · 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{OGZ7RAKFFSZVNHQUYHIWLZUOYH}

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	2026-06-12T01:10:01.953561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71b3f881452cb3569e14c1d165e68ec1d13381100949f70ff289c9d6b3e32da1

Aliases

arxiv: 2606.13429 · arxiv_version: 2606.13429v1 · doi: 10.48550/arxiv.2606.13429 · pith_short_12: OGZ7RAKFFSZV · pith_short_16: OGZ7RAKFFSZVNHQU · pith_short_8: OGZ7RAKF

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/OGZ7RAKFFSZVNHQUYHIWLZUOYH \
  | 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: 71b3f881452cb3569e14c1d165e68ec1d13381100949f70ff289c9d6b3e32da1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "428c41aa774854233f46396f6290ecf964e8ab7cbda6ee405352471eff39ff1f",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-11T14:57:25Z",
    "title_canon_sha256": "18cda9b532ff127d2a69b05b1e37f8551a5cf55053e15d6bbd130e97bbbdd77c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.13429",
    "kind": "arxiv",
    "version": 1
  }
}