Pith Number

pith:BPD43IQZ

pith:2012:BPD43IQZQ2YIF6VNKQDBAU5TWV

not attested not anchored not stored refs pending

Achievable Angles Between two Compressed Sparse Vectors Under Norm/Distance Constraints Imposed by the Restricted Isometry Property: A Plane Geometry Approach

Jwo-Yuh Wu, Ling-Hua Chang

arxiv:1202.1144 v1 · 2012-02-06 · 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{BPD43IQZQ2YIF6VNKQDBAU5TWV}

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	2026-05-18T00:57:57.067122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bc7cda21986b082faad54061053b3b57d0cb888fbf92da34ed0877d87d2826f

Aliases

arxiv: 1202.1144 · arxiv_version: 1202.1144v1 · doi: 10.48550/arxiv.1202.1144 · pith_short_12: BPD43IQZQ2YI · pith_short_16: BPD43IQZQ2YIF6VN · pith_short_8: BPD43IQZ

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/BPD43IQZQ2YIF6VNKQDBAU5TWV \
  | 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: 0bc7cda21986b082faad54061053b3b57d0cb888fbf92da34ed0877d87d2826f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2783f14c09ea519ba15179569b6b8b1d4389ea30e527cccdecffda122d44102d",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-02-06T14:14:29Z",
    "title_canon_sha256": "79836f2911c3c7c10cf0b54e5afd3bf1e492553bfe6c141f2da0ba37d58d78e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1144",
    "kind": "arxiv",
    "version": 1
  }
}