Pith Number

pith:77QLJ3SJ

pith:2014:77QLJ3SJCJHRHHFH4U25EWWHYP

not attested not anchored not stored refs pending

An explicit sparse recovery scheme in the L1-norm

Arnab Bhattacharyya, Vineet Nair

arxiv:1411.2344 v1 · 2014-11-10 · cs.DS · cs.IT · math.IT · math.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{77QLJ3SJCJHRHHFH4U25EWWHYP}

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	2026-05-18T02:38:07.760839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffe0b4ee49124f139ca7e535d25ac7c3f37f6b1db698b26147b06d1f2f55cc4e

Aliases

arxiv: 1411.2344 · arxiv_version: 1411.2344v1 · doi: 10.48550/arxiv.1411.2344 · pith_short_12: 77QLJ3SJCJHR · pith_short_16: 77QLJ3SJCJHRHHFH · pith_short_8: 77QLJ3SJ

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/77QLJ3SJCJHRHHFH4U25EWWHYP \
  | 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: ffe0b4ee49124f139ca7e535d25ac7c3f37f6b1db698b26147b06d1f2f55cc4e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8df52814443e46992d3173f2e1ddc50601741c212a89fcdc9710ca4ba51b79cc",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-11-10T07:59:37Z",
    "title_canon_sha256": "66596e51ae4c1d8898b2f3ae32e00868c405b5375abfac1cba00005eeba1b9c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.2344",
    "kind": "arxiv",
    "version": 1
  }
}