Pith Number

pith:LVWV3GRX

pith:2025:LVWV3GRXHBMAHKFFVODMCS3AWD

not attested not anchored not stored refs pending

Approximation of the Pseudospectral Abscissa via Eigenvalue Perturbation Theory

Emre Mengi, Waqar Ahmed

arxiv:2506.05535 v1 · 2025-06-05 · 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{LVWV3GRXHBMAHKFFVODMCS3AWD}

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	2026-07-05T11:17:05.232138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5d6d5d9a37385803a8a5ab86c14b60b0dc8dfdd278e1d1e5468cf8e4431725ae

Aliases

arxiv: 2506.05535 · arxiv_version: 2506.05535v1 · doi: 10.48550/arxiv.2506.05535 · pith_short_12: LVWV3GRXHBMA · pith_short_16: LVWV3GRXHBMAHKFF · pith_short_8: LVWV3GRX

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/LVWV3GRXHBMAHKFFVODMCS3AWD \
  | 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: 5d6d5d9a37385803a8a5ab86c14b60b0dc8dfdd278e1d1e5468cf8e4431725ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93abbe7adcea89e9230e0bf7d419c2a720c60aa3a7760d48bcdcc93341ce5c5f",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-06-05T19:32:35Z",
    "title_canon_sha256": "e928d4c009b9675244d73cc244c47bd65edeebe23d17d94462df94494f5fc6b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.05535",
    "kind": "arxiv",
    "version": 1
  }
}