Pith Number

pith:KQWCVLDX

pith:2018:KQWCVLDXXL5BH67KRSAZXUXTMV

not attested not anchored not stored refs pending

Diagnosing Forward Operator Error Using Optimal Transport

Cory D. Hauck, Michael A. Puthawala, Stanley J. Osher

arxiv:1810.12993 v1 · 2018-10-30 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KQWCVLDXXL5BH67KRSAZXUXTMV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:01:52.508447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

542c2aac77bafa13fbea8c819bd2f3656208e74e9098056fdd6c8da544174eab

Aliases

arxiv: 1810.12993 · arxiv_version: 1810.12993v1 · doi: 10.48550/arxiv.1810.12993 · pith_short_12: KQWCVLDXXL5B · pith_short_16: KQWCVLDXXL5BH67K · pith_short_8: KQWCVLDX

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/KQWCVLDXXL5BH67KRSAZXUXTMV \
  | 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: 542c2aac77bafa13fbea8c819bd2f3656208e74e9098056fdd6c8da544174eab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11e34f870531d6eaf57784cb4f2c3b4068a3e44792f330a3aab49a674a9a4eae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-10-30T20:34:03Z",
    "title_canon_sha256": "e4dc22c12add93a1254303ede4c90f3fd95e8879adc6f339afd551ca35db8294"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.12993",
    "kind": "arxiv",
    "version": 1
  }
}