Pith Number

pith:GU2MIRTK

pith:2007:GU2MIRTKR3I7TA7ABFLGPX7PVJ

not attested not anchored not stored refs pending

On a class of non-self-adjoint periodic eigenproblems with boundary and interior singularities

Lyonell Boulton, Marco Marletta, Michael Levitin

arxiv:0801.0172 v2 · 2007-12-30 · math.SP · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GU2MIRTKR3I7TA7ABFLGPX7PVJ}

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	2026-05-18T04:35:15.141406Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3534c4466a8ed1f983e0095667dfefaa5ba67079e38bbcf883800af7b0f8094b

Aliases

arxiv: 0801.0172 · arxiv_version: 0801.0172v2 · doi: 10.48550/arxiv.0801.0172 · pith_short_12: GU2MIRTKR3I7 · pith_short_16: GU2MIRTKR3I7TA7A · pith_short_8: GU2MIRTK

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/GU2MIRTKR3I7TA7ABFLGPX7PVJ \
  | 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: 3534c4466a8ed1f983e0095667dfefaa5ba67079e38bbcf883800af7b0f8094b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32a69b679f375115a58f52964dc9409ba733faa2b337fcedb966db2c9875d8e2",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2007-12-30T23:54:52Z",
    "title_canon_sha256": "3874a027e31f5de8000934da42b22e012f6d53a7f70a0c1846d00123f3718b8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.0172",
    "kind": "arxiv",
    "version": 2
  }
}