Pith Number

pith:2VPCZZVY

pith:2026:2VPCZZVY2C5DMFFYKUDTF6TNEJ

not attested not anchored not stored refs pending

Contour integral methods and structured perturbations for linear differential-algebraic equations

Mattia Manucci, Nicola Guglielmi

arxiv:2607.12628 v1 · 2026-07-14 · math.NA · cs.NA · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2VPCZZVY2C5DMFFYKUDTF6TNEJ}

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	2026-07-15T01:22:07.568053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d55e2ce6b8d0ba3614b8550732fa6d225cac5a9b3b967bb6cbd3ff52f61cc1cf

Aliases

arxiv: 2607.12628 · arxiv_version: 2607.12628v1 · doi: 10.48550/arxiv.2607.12628 · pith_short_12: 2VPCZZVY2C5D · pith_short_16: 2VPCZZVY2C5DMFFY · pith_short_8: 2VPCZZVY

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/2VPCZZVY2C5DMFFYKUDTF6TNEJ \
  | 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: d55e2ce6b8d0ba3614b8550732fa6d225cac5a9b3b967bb6cbd3ff52f61cc1cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3adccb64586a2b368b64dbc6b4294ba63f0ed02e9075f090fd4504a084b18367",
    "cross_cats_sorted": [
      "cs.NA",
      "math.DS"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-14T11:06:01Z",
    "title_canon_sha256": "09bf325c27c26db8d0c69b7386dc47d35bd49516a53b578bf379c8695f81f3ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.12628",
    "kind": "arxiv",
    "version": 1
  }
}