Pith Number

pith:YOT6F4IC

pith:2026:YOT6F4ICXWUJR2PYYHQOGHVLUI

not attested not anchored not stored refs pending

A Portable and Versatile Limited-Memory BFGS Implementation in PETSc/TAO

Alp Dener, Hansol Suh, Hong Zhang, Richard Tran Mills, Tobin Isaac, Todd Munson

arxiv:2608.00196 v1 · 2026-07-31 · cs.DC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YOT6F4ICXWUJR2PYYHQOGHVLUI}

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	2026-08-04T00:33:52.284360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3a7e2f102bda898e9f8c1e0e31eaba21289bf83409fbde9d6a8b50529cc2959

Aliases

arxiv: 2608.00196 · arxiv_version: 2608.00196v1 · doi: 10.48550/arxiv.2608.00196 · pith_short_12: YOT6F4ICXWUJ · pith_short_16: YOT6F4ICXWUJR2PY · pith_short_8: YOT6F4IC

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/YOT6F4ICXWUJR2PYYHQOGHVLUI \
  | 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: c3a7e2f102bda898e9f8c1e0e31eaba21289bf83409fbde9d6a8b50529cc2959

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2aeebbac7e77311f40b92ceef40a757038448fa97971fc1da5aa08df11889954",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2026-07-31T18:23:43Z",
    "title_canon_sha256": "29afa80d624a97be0237f299a504922d0892974f6f77774ab5b85b0fdcdf5396"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.00196",
    "kind": "arxiv",
    "version": 1
  }
}