Pith Number

pith:GJV2FAWZ

pith:2019:GJV2FAWZNG3GOMBZYRNP74VQ7F

not attested not anchored not stored refs pending

Quadratically regularized optimal transport

Christian Meyer, Dirk A. Lorenz, Paul Manns

arxiv:1903.01112 v4 · 2019-03-04 · math.OC · cs.NA · 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{GJV2FAWZNG3GOMBZYRNP74VQ7F}

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	2026-07-05T00:02:57.268150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

326ba282d969b6673039c45afff2b0f94a17415ac1fe11e4580f6783b9cb5e55

Aliases

arxiv: 1903.01112 · arxiv_version: 1903.01112v4 · doi: 10.48550/arxiv.1903.01112 · pith_short_12: GJV2FAWZNG3G · pith_short_16: GJV2FAWZNG3GOMBZ · pith_short_8: GJV2FAWZ

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/GJV2FAWZNG3GOMBZYRNP74VQ7F \
  | 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: 326ba282d969b6673039c45afff2b0f94a17415ac1fe11e4580f6783b9cb5e55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6288447668ee49231f680ba205627afd9e0275ae3b6e91e9a15e52e83a1bce8",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-03-04T07:58:31Z",
    "title_canon_sha256": "dd500c2a007f575e0c676645ccf0ccc8cb87f6fdd1abe693f027e6f48fbced1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.01112",
    "kind": "arxiv",
    "version": 4
  }
}