Pith Number

pith:OYKG2O7C

pith:2013:OYKG2O7C6D2SGPP4LHMCD5ZTHO

not attested not anchored not stored refs pending

Precisely Verifying the Null Space Conditions in Compressed Sensing: A Sandwiching Algorithm

Myung Cho, Weiyu Xu

arxiv:1306.2665 v3 · 2013-06-11 · cs.IT · cs.LG · cs.SY · 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{OYKG2O7C6D2SGPP4LHMCD5ZTHO}

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	2026-05-18T03:16:16.296080Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76146d3be2f0f5233dfc59d821f7333b8bdc1d04f22c8f8967ac7ce6a01171dc

Aliases

arxiv: 1306.2665 · arxiv_version: 1306.2665v3 · doi: 10.48550/arxiv.1306.2665 · pith_short_12: OYKG2O7C6D2S · pith_short_16: OYKG2O7C6D2SGPP4 · pith_short_8: OYKG2O7C

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/OYKG2O7C6D2SGPP4LHMCD5ZTHO \
  | 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: 76146d3be2f0f5233dfc59d821f7333b8bdc1d04f22c8f8967ac7ce6a01171dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc1daf10d1de4b3358d2ce844903fb7a5961767ab53dc55db30cd958751cab26",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.SY",
      "math.IT",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-06-11T21:57:47Z",
    "title_canon_sha256": "e1623fe939cc20aa7bb69aed60c3c866cbd8e229e6d16fd0c027440f360cb679"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.2665",
    "kind": "arxiv",
    "version": 3
  }
}