Pith Number

pith:PCENGDC7

pith:2011:PCENGDC7JIW5YGTJFY4FLEDRP7

not attested not anchored not stored refs pending

Inverse problems for Jacobi operators II: Mass perturbations of semi-infinite mass-spring systems

Luis O. Silva, Mikhail Kudryavtsev, Rafael del Rio

arxiv:1106.4598 v4 · 2011-06-22 · 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{PCENGDC7JIW5YGTJFY4FLEDRP7}

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	2026-05-18T03:36:46.766214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7888d30c5f4a2ddc1a692e385590717ff3c12d0e8d970942b7995e06d7b5e736

Aliases

arxiv: 1106.4598 · arxiv_version: 1106.4598v4 · doi: 10.48550/arxiv.1106.4598 · pith_short_12: PCENGDC7JIW5 · pith_short_16: PCENGDC7JIW5YGTJ · pith_short_8: PCENGDC7

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/PCENGDC7JIW5YGTJFY4FLEDRP7 \
  | 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: 7888d30c5f4a2ddc1a692e385590717ff3c12d0e8d970942b7995e06d7b5e736

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cc982f2051ef9311ef7d0e9260957283d65e19ef484cb20a44dd6b877e65cfc",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2011-06-22T23:56:15Z",
    "title_canon_sha256": "25c3d115216dbf56b97f3d29505530c391ad365ece5487c7d5a5ca8d387a7990"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.4598",
    "kind": "arxiv",
    "version": 4
  }
}