Pith Number

pith:Y3DZRCED

pith:2026:Y3DZRCEDQTO3BEXXOC3JMLR2IM

not attested not anchored not stored refs pending

Defect Subspaces and Localized Instabilities in Cut-Cell Finite-Volume Operators

Justo E. Karell

arxiv:2607.28808 v1 · 2026-07-30 · math.NA · 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{Y3DZRCEDQTO3BEXXOC3JMLR2IM}

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	2026-08-03T00:13:04.748269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6c798888384ddb092f770b6962e3a432cd807d4a28dbf847606893beef4fe6a

Aliases

arxiv: 2607.28808 · arxiv_version: 2607.28808v1 · doi: 10.48550/arxiv.2607.28808 · pith_short_12: Y3DZRCEDQTO3 · pith_short_16: Y3DZRCEDQTO3BEXX · pith_short_8: Y3DZRCED

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/Y3DZRCEDQTO3BEXXOC3JMLR2IM \
  | 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: c6c798888384ddb092f770b6962e3a432cd807d4a28dbf847606893beef4fe6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7afa807ed22305e029971ec2d61739d7e918c346c9a4f150f4cf9df15b2a9e0b",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-30T20:09:42Z",
    "title_canon_sha256": "64118f87c6a5772763cc147207463c324a8128e58e7d77e358eb120a41051454"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.28808",
    "kind": "arxiv",
    "version": 1
  }
}