Pith Number

pith:7D4M27NH

pith:2013:7D4M27NHIXZ2WISXUJ2OFF6OFN

not attested not anchored not stored refs pending

Scaling Law for Recovering the Sparsest Element in a Subspace

Laurent Demanet, Paul Hand

arxiv:1310.1654 v2 · 2013-10-07 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7D4M27NHIXZ2WISXUJ2OFF6OFN}

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	2026-05-18T02:32:14.370435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8f8cd7da745f3ab2257a274e297ce2b59bea3e0c62d82be0991b5928537b1c5

Aliases

arxiv: 1310.1654 · arxiv_version: 1310.1654v2 · doi: 10.48550/arxiv.1310.1654 · pith_short_12: 7D4M27NHIXZ2 · pith_short_16: 7D4M27NHIXZ2WISX · pith_short_8: 7D4M27NH

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/7D4M27NHIXZ2WISXUJ2OFF6OFN \
  | 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: f8f8cd7da745f3ab2257a274e297ce2b59bea3e0c62d82be0991b5928537b1c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2eeba8a4bc24a0291a9bba27b3b1e81c940e6c3878e6805517c2c28a3f44a46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-10-07T01:50:11Z",
    "title_canon_sha256": "b91ad1284681fb9948341ff45c43df0cc0cf8fb8773d0d0863d02c70833d9ad9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1654",
    "kind": "arxiv",
    "version": 2
  }
}