Pith Number

pith:H23NTLRM

pith:2018:H23NTLRMUYU6WWOVAIRRMBB5UJ

not attested not anchored not stored refs pending

A new geometric viewpoint on Sturm-Liouville eigenvalue problems

Horst Martini, Ralph Teixeira, Vitor Balestro

arxiv:1809.02975 v1 · 2018-09-09 · math.CA · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H23NTLRMUYU6WWOVAIRRMBB5UJ}

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	2026-05-18T00:06:10.463745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3eb6d9ae2ca629eb59d5022316043da26dd499ef0c2fabbecd34f8f28f767b8c

Aliases

arxiv: 1809.02975 · arxiv_version: 1809.02975v1 · doi: 10.48550/arxiv.1809.02975 · pith_short_12: H23NTLRMUYU6 · pith_short_16: H23NTLRMUYU6WWOV · pith_short_8: H23NTLRM

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/H23NTLRMUYU6WWOVAIRRMBB5UJ \
  | 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: 3eb6d9ae2ca629eb59d5022316043da26dd499ef0c2fabbecd34f8f28f767b8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a75c909162978aa6f30024aa88c77cf40f462b3b6a84c5cdc9aaaf0a6a4b001",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2018-09-09T14:00:36Z",
    "title_canon_sha256": "f4fa6a6961deb4e7124945b59b485773d64b2530d3f57853b13ff72415f6da85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02975",
    "kind": "arxiv",
    "version": 1
  }
}