Pith Number

pith:2EOATA4C

pith:2026:2EOATA4CTNVFTMMUAEPWPOONIO

not attested not anchored not stored refs pending

Spectral problems on open-book structures with singularly perturbed density: the limit operator

Delfina G\`omez, Maria-Eugenia P\`erez-Mart\`inez, Yuriy Golovaty

arxiv:2607.28040 v1 · 2026-07-30 · math.SP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EOATA4CTNVFTMMUAEPWPOONIO}

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	2026-07-31T01:35:27.900973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

d11c0983829b6a59b194011f67b9cd4381152d234a5f8d1237698922817504bc

Aliases

arxiv: 2607.28040 · arxiv_version: 2607.28040v1 · doi: 10.48550/arxiv.2607.28040 · pith_short_12: 2EOATA4CTNVF · pith_short_16: 2EOATA4CTNVFTMMU · pith_short_8: 2EOATA4C

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/2EOATA4CTNVFTMMUAEPWPOONIO \
  | 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: d11c0983829b6a59b194011f67b9cd4381152d234a5f8d1237698922817504bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c38a40212f15d41793011d925d83c90f24b0994f376c395b8d6709952b379be5",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2026-07-30T11:23:49Z",
    "title_canon_sha256": "ff4ebe8c88ca54b39ba1b3a5459d5b7ab9cff6bee64ad40245bb4329404f783c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.28040",
    "kind": "arxiv",
    "version": 1
  }
}