Pith Number

pith:MFB7HE6Y

pith:2008:MFB7HE6YC7ZF5ZPST4BB4XPA2K

not attested not anchored not stored refs pending

Efficient computation of high index Sturm-Liouville eigenvalues for problems in physics

Guido Vanden Berghe, Marnix Van Daele, Veerle Ledoux

arxiv:0804.2605 v1 · 2008-04-16 · math.NA · cs.NA · 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{MFB7HE6YC7ZF5ZPST4BB4XPA2K}

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	2026-06-03T22:06:05.626847Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6143f393d817f25ee5f29f021e5de0d284f1888e86ccc2463bb273954319d903

Aliases

arxiv: 0804.2605 · arxiv_version: 0804.2605v1 · doi: 10.48550/arxiv.0804.2605 · pith_short_12: MFB7HE6YC7ZF · pith_short_16: MFB7HE6YC7ZF5ZPS · pith_short_8: MFB7HE6Y

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/MFB7HE6YC7ZF5ZPST4BB4XPA2K \
  | 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: 6143f393d817f25ee5f29f021e5de0d284f1888e86ccc2463bb273954319d903

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2a3ba58f274079cf855bcb6a0eb2bb1fdcc63f1955f703e86ef649e5eb2dc19",
    "cross_cats_sorted": [
      "cs.NA",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-04-16T14:14:27Z",
    "title_canon_sha256": "5f1c011319a1ff11fd373b99264167f932e7cfdb99326fb5c943d6f0aed2aa7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.2605",
    "kind": "arxiv",
    "version": 1
  }
}