Pith Number

pith:N2FLZKY5

pith:2015:N2FLZKY55EPMIX72A4AQONDAJH

not attested not anchored not stored refs pending

FAASTA: A fast solver for total-variation regularization of ill-conditioned problems with application to brain imaging

Bertand Thirion (PARIETAL), Elvis Dohmatob (PARIETAL), Ga\"el Varoquaux (Parietal), Michael Eickenberg (PARIETAL)

arxiv:1512.06999 v1 · 2015-12-22 · q-bio.NC · cs.LG · stat.CO · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N2FLZKY55EPMIX72A4AQONDAJH}

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	2026-05-18T01:23:53.177132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e8abcab1de91ec45ffa070107346049f018532de94af3a12651af9f72c5ca23

Aliases

arxiv: 1512.06999 · arxiv_version: 1512.06999v1 · doi: 10.48550/arxiv.1512.06999 · pith_short_12: N2FLZKY55EPM · pith_short_16: N2FLZKY55EPMIX72 · pith_short_8: N2FLZKY5

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/N2FLZKY55EPMIX72A4AQONDAJH \
  | 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: 6e8abcab1de91ec45ffa070107346049f018532de94af3a12651af9f72c5ca23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "182c6c3bc2339a0d377931ad6786dcedf726be466b7cc49934d907c6571a2d60",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.CO",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.NC",
    "submitted_at": "2015-12-22T09:35:55Z",
    "title_canon_sha256": "ed60346990daab1218790610b1e85e3b5ddf76ac4d3276fb8262514345a77030"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06999",
    "kind": "arxiv",
    "version": 1
  }
}