Pith Number

pith:TEO2O4FI

pith:2015:TEO2O4FIRIX4XEYBQJXA2J3VPN

not attested not anchored not stored refs pending

Eigenvalue problem of Sturm-Liouville systems with separated boundary conditions

Penghui Wang, Xijun Hu

arxiv:1504.01817 v1 · 2015-04-08 · math.SP · 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{TEO2O4FIRIX4XEYBQJXA2J3VPN}

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	2026-05-18T02:19:18.202649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

991da770a88a2fcb9301826e0d27757b7ddfc0481583ce82b9f168e6332d51b8

Aliases

arxiv: 1504.01817 · arxiv_version: 1504.01817v1 · doi: 10.48550/arxiv.1504.01817 · pith_short_12: TEO2O4FIRIX4 · pith_short_16: TEO2O4FIRIX4XEYB · pith_short_8: TEO2O4FI

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/TEO2O4FIRIX4XEYBQJXA2J3VPN \
  | 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: 991da770a88a2fcb9301826e0d27757b7ddfc0481583ce82b9f168e6332d51b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1884b1d639e3e497e68d37eda401421e5c2cf6130d887989872d78ca72757ec1",
    "cross_cats_sorted": [
      "math.DS",
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2015-04-08T03:14:32Z",
    "title_canon_sha256": "37936502ddf2483ab1d84e85babc6657fe9eb34d62e36ac054319729d3a880c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01817",
    "kind": "arxiv",
    "version": 1
  }
}