Pith Number

pith:A4N74W6Q

pith:2010:A4N74W6QYEW3GVMYOO3AGWTZQU

not attested not anchored not stored refs pending

Subspace Methods for Joint Sparse Recovery

Kiryung Lee, Marius Junge, Yoram Bresler

arxiv:1004.3071 v4 · 2010-04-18 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A4N74W6QYEW3GVMYOO3AGWTZQU}

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	2026-05-18T00:58:19.604895Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

071bfe5bd0c12db3559873b6035a798517528ab02f6eb5392a39e02f7840bea1

Aliases

arxiv: 1004.3071 · arxiv_version: 1004.3071v4 · doi: 10.48550/arxiv.1004.3071 · pith_short_12: A4N74W6QYEW3 · pith_short_16: A4N74W6QYEW3GVMY · pith_short_8: A4N74W6Q

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/A4N74W6QYEW3GVMYOO3AGWTZQU \
  | 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: 071bfe5bd0c12db3559873b6035a798517528ab02f6eb5392a39e02f7840bea1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63f40d6520c78b79723b60bb27137c8dee4a408f56669706771b23cd7fc4db01",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-04-18T23:52:49Z",
    "title_canon_sha256": "f78cd7277a1155a732be7dd8b5795e93d3d466fff1ded4e6a12812be486becf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.3071",
    "kind": "arxiv",
    "version": 4
  }
}