Pith Number

pith:ATZUXKYD

pith:2011:ATZUXKYDLLDQLQ2GDX3XW77WGM

not attested not anchored not stored refs pending

Constructing test instances for Basis Pursuit Denoising

Dirk A. Lorenz

arxiv:1103.2897 v1 · 2011-03-15 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ATZUXKYDLLDQLQ2GDX3XW77WGM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T04:26:46.290888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04f34bab035ac705c3461df77b7ff6331c1abbde94b411b1bf5dc9c6fd413cb6

Aliases

arxiv: 1103.2897 · arxiv_version: 1103.2897v1 · doi: 10.48550/arxiv.1103.2897 · pith_short_12: ATZUXKYDLLDQ · pith_short_16: ATZUXKYDLLDQLQ2G · pith_short_8: ATZUXKYD

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/ATZUXKYDLLDQLQ2GDX3XW77WGM \
  | 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: 04f34bab035ac705c3461df77b7ff6331c1abbde94b411b1bf5dc9c6fd413cb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7684a8772254e2e8fe75fac324fae84026819453a0cf4e35d3cf844081effa42",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-03-15T13:04:10Z",
    "title_canon_sha256": "f829865243c93da571a8e0c0c54ee454682b30bdf3219e4fbb547a82280be4cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.2897",
    "kind": "arxiv",
    "version": 1
  }
}