Pith Number

pith:EGNHKK45

pith:2025:EGNHKK4574CAX2J6PGK6KBOEE7

not attested not anchored not stored refs pending

A pseudospectral approach to rigorous numerical estimation of resonances of transfer operators

Alex Blumenthal, Isaia Nisoli, Toby Taylor-Crush

arxiv:2507.09021 v2 · 2025-07-11 · math.DS · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EGNHKK4574CAX2J6PGK6KBOEE7}

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	2026-06-04T00:06:50.261779Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

219a752b9dff040be93e7995e505c427e5f01d5890e362ef796bd99aff703fc2

Aliases

arxiv: 2507.09021 · arxiv_version: 2507.09021v2 · doi: 10.48550/arxiv.2507.09021 · pith_short_12: EGNHKK4574CA · pith_short_16: EGNHKK4574CAX2J6 · pith_short_8: EGNHKK45

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/EGNHKK4574CAX2J6PGK6KBOEE7 \
  | 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: 219a752b9dff040be93e7995e505c427e5f01d5890e362ef796bd99aff703fc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd828079e9333c8a9ec9f14ea769009d5afd34e0bb3955c38190432273d2a149",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2025-07-11T21:05:16Z",
    "title_canon_sha256": "ff21187d32c63281275f599a5d952e5acbb4af9894f79ad4d98e606a660c1db8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.09021",
    "kind": "arxiv",
    "version": 2
  }
}