Pith Number

pith:YM4YBK7Q

pith:2008:YM4YBK7Q62MZSM7CC6FABG5GZR

not attested not anchored not stored refs pending

An Alternating l1 approach to the compressed sensing problem

Stephane Chretien

arxiv:0809.0660 v3 · 2008-09-03 · stat.ME · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YM4YBK7Q62MZSM7CC6FABG5GZR}

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	2026-05-18T04:37:20.907923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c33980abf0f6999933e2178a009ba6cc45c74aee417e0b8cf3a7372b7e7cd38e

Aliases

arxiv: 0809.0660 · arxiv_version: 0809.0660v3 · doi: 10.48550/arxiv.0809.0660 · pith_short_12: YM4YBK7Q62MZ · pith_short_16: YM4YBK7Q62MZSM7C · pith_short_8: YM4YBK7Q

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/YM4YBK7Q62MZSM7CC6FABG5GZR \
  | 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: c33980abf0f6999933e2178a009ba6cc45c74aee417e0b8cf3a7372b7e7cd38e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efc8b152699c0454c2e3f27a69eb0a1d4a09d59a4f6d15d48b53bc43579e36a3",
    "cross_cats_sorted": [
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2008-09-03T16:08:08Z",
    "title_canon_sha256": "a4ec685cfcad50c21c7ff7a49ba2eca0615c0d74e88f127992e1935f2018c485"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.0660",
    "kind": "arxiv",
    "version": 3
  }
}