Pith Number

pith:RQHUQZVT

pith:2007:RQHUQZVTANDARE4XQCVZIO57DN

not attested not anchored not stored refs pending

Weyl matrix functions and inverse problems for discrete Dirac type self-adjoint system: explicit and general solutions

A.L. Sakhnovich, B. Fritzsche, B. Kirstein, I.Ya. Roitberg

arxiv:math/0703369 v1 · 2007-03-13 · math.CA · 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{RQHUQZVTANDARE4XQCVZIO57DN}

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	2026-05-18T04:25:03.574486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c0f4866b3034608939780ab943bbf1b6db3a05a88e024da680c22060063902d

Aliases

arxiv: math/0703369 · arxiv_version: math/0703369v1 · doi: 10.48550/arxiv.math/0703369 · pith_short_12: RQHUQZVTANDA · pith_short_16: RQHUQZVTANDARE4X · pith_short_8: RQHUQZVT

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/RQHUQZVTANDARE4XQCVZIO57DN \
  | 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: 8c0f4866b3034608939780ab943bbf1b6db3a05a88e024da680c22060063902d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29b412faaccd6e83a7dedd2a6770d7fcabdb21b85fc3194e45cb44458aa221cc",
    "cross_cats_sorted": [
      "math.SP"
    ],
    "license": "",
    "primary_cat": "math.CA",
    "submitted_at": "2007-03-13T09:20:07Z",
    "title_canon_sha256": "b312fc1edb8a43dc97e1cd1aa707029ac2d9aa374cdbcdaf928f8bd54e9f2e38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0703369",
    "kind": "arxiv",
    "version": 1
  }
}