Pith Number

pith:AN6LWTE3

pith:2015:AN6LWTE3W6TNVGHTZAFK473RBJ

not attested not anchored not stored refs pending

Performance of First- and Second-Order Methods for L1-Regularized Least Squares Problems

Jacek Gondzio, Kimon Fountoulakis

arxiv:1503.03520 v3 · 2015-03-11 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AN6LWTE3W6TNVGHTZAFK473RBJ}

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	2026-05-18T01:24:20.247270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

037cbb4c9bb7a6da98f3c80aae7f710a4c07c4083ccb8e9f1c5ff77f1f3e375d

Aliases

arxiv: 1503.03520 · arxiv_version: 1503.03520v3 · doi: 10.48550/arxiv.1503.03520 · pith_short_12: AN6LWTE3W6TN · pith_short_16: AN6LWTE3W6TNVGHT · pith_short_8: AN6LWTE3

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/AN6LWTE3W6TNVGHTZAFK473RBJ \
  | 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: 037cbb4c9bb7a6da98f3c80aae7f710a4c07c4083ccb8e9f1c5ff77f1f3e375d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44d8afd367a1e3ee7fa6181dc2f89f2a14d09c75106a7094f59c16e44dec1df3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-03-11T22:11:59Z",
    "title_canon_sha256": "4ea4e4255287f9646a7f1cbb6f8b469cbcacb84cde0a52555247f896626d6c1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03520",
    "kind": "arxiv",
    "version": 3
  }
}