Pith Number

pith:ZF5BLYAR

pith:2015:ZF5BLYARQXIQD5OXKFPH5MA6K2

not attested not anchored not stored refs pending

Expander $\ell_0$-Decoding

Jared Tanner, Rodrigo Mendoza-Smith

arxiv:1508.01256 v1 · 2015-08-06 · math.NA · cs.IT · math.CO · 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{ZF5BLYARQXIQD5OXKFPH5MA6K2}

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	2026-05-18T01:35:43.055258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c97a15e01185d101f5d7515e7eb01e568ec3203a97a6e2b4de820a68c39274e0

Aliases

arxiv: 1508.01256 · arxiv_version: 1508.01256v1 · doi: 10.48550/arxiv.1508.01256 · pith_short_12: ZF5BLYARQXIQ · pith_short_16: ZF5BLYARQXIQD5OX · pith_short_8: ZF5BLYAR

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/ZF5BLYARQXIQD5OXKFPH5MA6K2 \
  | 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: c97a15e01185d101f5d7515e7eb01e568ec3203a97a6e2b4de820a68c39274e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6abb471e2eda8d82f723273613f8e9d8ab214226b3f40ef89e8247c702f90c12",
    "cross_cats_sorted": [
      "cs.IT",
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-08-06T01:37:46Z",
    "title_canon_sha256": "1f144d3102907a174f69ada0207870f5205a9eba080a50422b56aa46f24fecde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.01256",
    "kind": "arxiv",
    "version": 1
  }
}