Pith Number

pith:SKFODBBI

pith:2013:SKFODBBIG2HC2YWJ3AGX6VTGR5

not attested not anchored not stored refs pending

On Pole Placement and Invariant Subspaces

Naim Bajcinca

arxiv:1311.3779 v1 · 2013-11-15 · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SKFODBBIG2HC2YWJ3AGX6VTGR5}

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	2026-05-18T03:07:03.039188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

928ae18428368e2d62c9d80d7f56668f5ff6d3010fd5c40c2d8b93c727930a94

Aliases

arxiv: 1311.3779 · arxiv_version: 1311.3779v1 · doi: 10.48550/arxiv.1311.3779 · pith_short_12: SKFODBBIG2HC · pith_short_16: SKFODBBIG2HC2YWJ · pith_short_8: SKFODBBI

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/SKFODBBIG2HC2YWJ3AGX6VTGR5 \
  | 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: 928ae18428368e2d62c9d80d7f56668f5ff6d3010fd5c40c2d8b93c727930a94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4ac9c8133e2e28a8da6e427128473831a29c88cd7ebf6ecd87d92bccceee4fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2013-11-15T09:19:29Z",
    "title_canon_sha256": "f53d8b5e51cee279d80027b9c5514f2173c11b972809de1105f1768ac8d3ff92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3779",
    "kind": "arxiv",
    "version": 1
  }
}