Pith Number

pith:OM2N7RCP

pith:2017:OM2N7RCPNFMDBWSXYRCETGYWKZ

not attested not anchored not stored refs pending

Greedy Sparse Signal Reconstruction Using Matching Pursuit Based on Hope-tree

Chengqing Li, Hongqing Zeng, Jun Fang, Zhetao Li

arxiv:1701.02922 v1 · 2017-01-11 · 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{OM2N7RCPNFMDBWSXYRCETGYWKZ}

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	2026-05-18T00:52:59.817180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7334dfc44f695830da57c444499b16564a26cc5ba049bcfe81dc4d0fa41310b5

Aliases

arxiv: 1701.02922 · arxiv_version: 1701.02922v1 · doi: 10.48550/arxiv.1701.02922 · pith_short_12: OM2N7RCPNFMD · pith_short_16: OM2N7RCPNFMDBWSX · pith_short_8: OM2N7RCP

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/OM2N7RCPNFMDBWSXYRCETGYWKZ \
  | 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: 7334dfc44f695830da57c444499b16564a26cc5ba049bcfe81dc4d0fa41310b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0842893292b0e36e7a665e8d77f9001d11d27ca796e3dc3ee4ab6c74326b3cf7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-01-11T10:50:54Z",
    "title_canon_sha256": "8da67328f7f0544ac1fc7dc631908ec43cf26a07ec3b47ce27559c57e4941f10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02922",
    "kind": "arxiv",
    "version": 1
  }
}