Pith Number

pith:MYJJ5OXC

pith:2014:MYJJ5OXCLIPL7OVEFABB7WJTYS

not attested not anchored not stored refs pending

A totally unimodular view of structured sparsity

Marwa El Halabi, Volkan Cevher

arxiv:1411.1990 v2 · 2014-11-07 · cs.LG · 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{MYJJ5OXCLIPL7OVEFABB7WJTYS}

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	2026-05-18T02:25:48.881062Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

66129ebae25a1ebfbaa428021fd933c4b1849558f1e4c20c2f952b98062df95c

Aliases

arxiv: 1411.1990 · arxiv_version: 1411.1990v2 · doi: 10.48550/arxiv.1411.1990 · pith_short_12: MYJJ5OXCLIPL · pith_short_16: MYJJ5OXCLIPL7OVE · pith_short_8: MYJJ5OXC

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/MYJJ5OXCLIPL7OVEFABB7WJTYS \
  | 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: 66129ebae25a1ebfbaa428021fd933c4b1849558f1e4c20c2f952b98062df95c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16bc786abda81c35294e6142c272ac8ef255b01ab86459ac79a49095f473d3d8",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-11-07T17:24:30Z",
    "title_canon_sha256": "284fa303b27b5cc38015bb212eaf770b0f65a7858b149ebccd8fe4c2ecb015c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.1990",
    "kind": "arxiv",
    "version": 2
  }
}