Pith Number

pith:7RSS223H

pith:2016:7RSS223HVLXTK2GRIPYU6CBROS

not attested not anchored not stored refs pending

A note on Wall's modification of the Schur algorithm and linear pencils of Jacobi matrices

Maxim Derevyagin

arxiv:1609.06733 v2 · 2016-09-21 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7RSS223HVLXTK2GRIPYU6CBROS}

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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	2026-05-18T01:03:42.447246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc652d6b67aaef3568d143f14f083174a3e7c8b799825e3f38d7257bcf6ab901

Aliases

arxiv: 1609.06733 · arxiv_version: 1609.06733v2 · doi: 10.48550/arxiv.1609.06733 · pith_short_12: 7RSS223HVLXT · pith_short_16: 7RSS223HVLXTK2GR · pith_short_8: 7RSS223H

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/7RSS223HVLXTK2GRIPYU6CBROS \
  | 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: fc652d6b67aaef3568d143f14f083174a3e7c8b799825e3f38d7257bcf6ab901

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "352176315a4039282527733de144f94956173d09221e8257a4987546c7cf91ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2016-09-21T20:07:44Z",
    "title_canon_sha256": "508c750d8488f54f24782aef590cd5e391899946b562d12d9a1e1f986b4150bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.06733",
    "kind": "arxiv",
    "version": 2
  }
}