Pith Number

pith:C266CWXW

pith:2012:C266CWXW5RI7CJRQDBOCVLCDKP

not attested not anchored not stored refs pending

Sparse Signal Separation in Redundant Dictionaries

C\'eline Aubel, Christoph Studer, Graeme Pope, Helmut B\"olcskei

arxiv:1205.4551 v1 · 2012-05-21 · 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{C266CWXW5RI7CJRQDBOCVLCDKP}

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	2026-05-18T00:58:18.205533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16bde15af6ec51f12630185c2aac4353e080ec1fa9d05c31bc0a4a14ea2935ee

Aliases

arxiv: 1205.4551 · arxiv_version: 1205.4551v1 · doi: 10.48550/arxiv.1205.4551 · pith_short_12: C266CWXW5RI7 · pith_short_16: C266CWXW5RI7CJRQ · pith_short_8: C266CWXW

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/C266CWXW5RI7CJRQDBOCVLCDKP \
  | 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: 16bde15af6ec51f12630185c2aac4353e080ec1fa9d05c31bc0a4a14ea2935ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0aece470a164b0ae0033e23762ca6fe3ee45cb9fe39cb14ea5f88d280c03261f",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-05-21T10:18:56Z",
    "title_canon_sha256": "e64f3db92b58b9eafba31da6344033598129d16eb9f29b660aa292a8a45ece54"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.4551",
    "kind": "arxiv",
    "version": 1
  }
}