Pith Number

pith:7SHKNGQK

pith:2026:7SHKNGQKDFUQQCFPG3GNRKGNTY

not attested not anchored not stored refs pending

Nonnegative Low-Rank Matrix Correction under an Orthogonality Constraint in Conservative Vlasov Simulations

Jingmei Qiu, Stephen Becker, Xiangxiong Zhang, Yue Wu

arxiv:2607.26272 v1 · 2026-07-28 · math.NA · cs.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7SHKNGQKDFUQQCFPG3GNRKGNTY}

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	2026-07-30T01:17:53.325025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

fc8ea69a0a19690808af36ccd8a8cd9e16e83881b1fd71f724162ea1aa162cdc

Aliases

arxiv: 2607.26272 · arxiv_version: 2607.26272v1 · doi: 10.48550/arxiv.2607.26272 · pith_short_12: 7SHKNGQKDFUQ · pith_short_16: 7SHKNGQKDFUQQCFP · pith_short_8: 7SHKNGQK

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/7SHKNGQKDFUQQCFPG3GNRKGNTY \
  | 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: fc8ea69a0a19690808af36ccd8a8cd9e16e83881b1fd71f724162ea1aa162cdc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e207e6e37cc157f31259626f4d624478429351675c5063286e5ad91d16e89e8b",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-28T21:07:37Z",
    "title_canon_sha256": "61d19e2776244035923d70fbf1292b76d3ffb9ffc2f16309a4ebdd7fd1f9cbf4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.26272",
    "kind": "arxiv",
    "version": 1
  }
}