Pith Number

pith:U5KNAXMN

pith:2017:U5KNAXMN6RBE4FXGAQDQF6JKZL

not attested not anchored not stored refs pending

A Fast Algorithm for Separated Sparsity via Perturbed Lagrangians

Aleksander M\k{a}dry, Ludwig Schmidt, Slobodan Mitrovi\'c

arxiv:1712.08130 v1 · 2017-12-21 · cs.DS · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5KNAXMN6RBE4FXGAQDQF6JKZL}

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	2026-05-18T00:27:28.703454Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a754d05d8df4424e16e6040702f92acac4e33d32fca48a7a182d028729abf1b8

Aliases

arxiv: 1712.08130 · arxiv_version: 1712.08130v1 · doi: 10.48550/arxiv.1712.08130 · pith_short_12: U5KNAXMN6RBE · pith_short_16: U5KNAXMN6RBE4FXG · pith_short_8: U5KNAXMN

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/U5KNAXMN6RBE4FXGAQDQF6JKZL \
  | 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: a754d05d8df4424e16e6040702f92acac4e33d32fca48a7a182d028729abf1b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be3f599fd38f62371388023f0edf39160365d6743c6d45f33ba2a5048e73b048",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-12-21T18:06:34Z",
    "title_canon_sha256": "05f733f326389359f97102d2e49d53a7abd87013457f6c71c7e707b204f6ce5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.08130",
    "kind": "arxiv",
    "version": 1
  }
}