Pith Number

pith:Z5RLJXUS

pith:2025:Z5RLJXUSR7ZXN6OLMLDOTSXD7G

not attested not anchored not stored refs pending

Range Space or Null Space: Least-Squares Methods for the Realization Problem

Cristian R. Rojas, H\r{a}kan Hjalmarsson, Jiabao He, Yue Ju, Yueyue Xu

arxiv:2505.19639 v1 · 2025-05-26 · eess.SY · 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{Z5RLJXUSR7ZXN6OLMLDOTSXD7G}

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.

Cited by

1 paper in Pith

Preserving Topology Privacy of Network Systems by Feedback: Conditions and Distributed Design

Receipt and verification

First computed	2026-07-05T11:09:33.881100Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf62b4de928ff376f9cb62c6e9cae3f9b924ef26818826200bae634fab4dd318

Aliases

arxiv: 2505.19639 · arxiv_version: 2505.19639v1 · doi: 10.48550/arxiv.2505.19639 · pith_short_12: Z5RLJXUSR7ZX · pith_short_16: Z5RLJXUSR7ZXN6OL · pith_short_8: Z5RLJXUS

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/Z5RLJXUSR7ZXN6OLMLDOTSXD7G \
  | 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: cf62b4de928ff376f9cb62c6e9cae3f9b924ef26818826200bae634fab4dd318

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "877910b6838a98211a6db40b3acb626300b26c6858c07ec8832ab00bad78ac05",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2025-05-26T07:58:09Z",
    "title_canon_sha256": "11ff5bc92a981a4a1491d94c0d27f556fe6d92c9e858eb887ebee9ad99841f3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.19639",
    "kind": "arxiv",
    "version": 1
  }
}