Pith Number

pith:TYVAYYNR

pith:2007:TYVAYYNRIDRGWMQ7K2V65P4WF4

not attested not anchored not stored refs pending

L1Packv2: A Mathematica package for minimizing an $\ell_1$-penalized functional

Ignace Loris

arxiv:0710.3728 v4 · 2007-10-19 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TYVAYYNRIDRGWMQ7K2V65P4WF4}

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	2026-06-03T22:06:02.872530Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e2a0c61b140e26b321f56abeebf962f39f5b2e8887913d2aa3fed3cd0fd87b2

Aliases

arxiv: 0710.3728 · arxiv_version: 0710.3728v4 · doi: 10.48550/arxiv.0710.3728 · pith_short_12: TYVAYYNRIDRG · pith_short_16: TYVAYYNRIDRGWMQ7 · pith_short_8: TYVAYYNR

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/TYVAYYNRIDRGWMQ7K2V65P4WF4 \
  | 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: 9e2a0c61b140e26b321f56abeebf962f39f5b2e8887913d2aa3fed3cd0fd87b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "912a34abefb0e830536f4e647e72112da2c783f3c264f760f4bd27037104ff57",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2007-10-19T16:16:02Z",
    "title_canon_sha256": "b543822f2fe79b64f01b3e758e7ad7bc8a7cd9881eb975966ecf691ec0d76cdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.3728",
    "kind": "arxiv",
    "version": 4
  }
}