Pith Number

pith:J7F5RH2O

pith:2019:J7F5RH2OJKTWQ5IVNXSZCMD3SD

not attested not anchored not stored refs pending

An Adaptive $s$-step Conjugate Gradient Algorithm with Dynamic Basis Updating

Erin C. Carson

arxiv:1908.04081 v1 · 2019-08-12 · math.NA · cs.DC · 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{J7F5RH2OJKTWQ5IVNXSZCMD3SD}

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	2026-07-04T23:53:20.482574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fcbd89f4e4aa76875156de591307b90d060fc9ae8126ebf80f41a81a9de7b4c

Aliases

arxiv: 1908.04081 · arxiv_version: 1908.04081v1 · doi: 10.48550/arxiv.1908.04081 · pith_short_12: J7F5RH2OJKTW · pith_short_16: J7F5RH2OJKTWQ5IV · pith_short_8: J7F5RH2O

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/J7F5RH2OJKTWQ5IVNXSZCMD3SD \
  | 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: 4fcbd89f4e4aa76875156de591307b90d060fc9ae8126ebf80f41a81a9de7b4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5d7dd3b27dfbd3a1c3bb68d4a147f4788ea9f6d418b07e86287012e37f4248f",
    "cross_cats_sorted": [
      "cs.DC",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-12T10:30:33Z",
    "title_canon_sha256": "b2dcc97de3a5ab0f3652e6ea139f8dbdb3089260c715419410359eab2d3e6bcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04081",
    "kind": "arxiv",
    "version": 1
  }
}