Pith Number

pith:SP2KOXEE

pith:2016:SP2KOXEEGGKJKFZR5DQOYOGWDF

not attested not anchored not stored refs pending

Convex block-sparse linear regression with expanders -- provably

Anastasios Kyrillidis, Bubacarr Bah, Luca Baldassarre, Quoc Tran-Dinh, Rouzbeh Hasheminezhad, Volkan Cevher

arxiv:1603.06313 v2 · 2016-03-21 · cs.IT · math.IT · math.OC · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SP2KOXEEGGKJKFZR5DQOYOGWDF}

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	2026-05-18T01:17:49.922852Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93f4a75c843194951731e8e0ec38d6195ed7e516c35a0dcb8ea30e874ac1cc3f

Aliases

arxiv: 1603.06313 · arxiv_version: 1603.06313v2 · doi: 10.48550/arxiv.1603.06313 · pith_short_12: SP2KOXEEGGKJ · pith_short_16: SP2KOXEEGGKJKFZR · pith_short_8: SP2KOXEE

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/SP2KOXEEGGKJKFZR5DQOYOGWDF \
  | 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: 93f4a75c843194951731e8e0ec38d6195ed7e516c35a0dcb8ea30e874ac1cc3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ea4a933047122d795a3b233fb0d98ab0ad70047c8d913c07f5ccc9504408e9c",
    "cross_cats_sorted": [
      "math.IT",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2016-03-21T02:34:26Z",
    "title_canon_sha256": "dc7cec80fa21fd829eae357175bf8a4fd59b51b2556a9746d1db43c032b8d82e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.06313",
    "kind": "arxiv",
    "version": 2
  }
}