Pith Number

pith:W6EUIW3A

pith:2008:W6EUIW3A7ZI2GFQRTWUV7SBFIH

not attested not anchored not stored refs pending

Convergence of eigenvalues for a highly non-self-adjoint differential operator

E. B. Davies, John Weir

arxiv:0809.0787 v1 · 2008-09-04 · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W6EUIW3A7ZI2GFQRTWUV7SBFIH}

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	2026-05-18T02:58:11.205146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b789445b60fe51a316119da95fc82541cef0cdc9efe8477030e5180feaf791d3

Aliases

arxiv: 0809.0787 · arxiv_version: 0809.0787v1 · doi: 10.48550/arxiv.0809.0787 · pith_short_12: W6EUIW3A7ZI2 · pith_short_16: W6EUIW3A7ZI2GFQR · pith_short_8: W6EUIW3A

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/W6EUIW3A7ZI2GFQRTWUV7SBFIH \
  | 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: b789445b60fe51a316119da95fc82541cef0cdc9efe8477030e5180feaf791d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0d392b97581420f1f219625955ff864b1d1b4e02d3e1d0ff71e6139094d17a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2008-09-04T11:09:40Z",
    "title_canon_sha256": "6d9b986e2f3208c6877e689dd11fdba98364aa0429edbf89e5d7214048e44869"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.0787",
    "kind": "arxiv",
    "version": 1
  }
}