Pith Number

pith:TTJJCMUY

pith:2010:TTJJCMUYOAYB6QIOCTO3EAM64U

not attested not anchored not stored refs pending

Dictionary for Sparse Representation of Chirp Echo in Broadband Radar

Lei Gao

arxiv:1008.0178 v2 · 2010-08-01 · 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{TTJJCMUYOAYB6QIOCTO3EAM64U}

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	2026-05-18T04:42:43.061488Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9cd291329870301f410e14ddb2019ee5236dfee2e4d590f5cf850021b7e68960

Aliases

arxiv: 1008.0178 · arxiv_version: 1008.0178v2 · doi: 10.48550/arxiv.1008.0178 · pith_short_12: TTJJCMUYOAYB · pith_short_16: TTJJCMUYOAYB6QIO · pith_short_8: TTJJCMUY

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/TTJJCMUYOAYB6QIOCTO3EAM64U \
  | 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: 9cd291329870301f410e14ddb2019ee5236dfee2e4d590f5cf850021b7e68960

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cff0fc251e12709d748c62672f35527ce8399820a5b7e2543db8269e15e24c0",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-08-01T15:00:39Z",
    "title_canon_sha256": "e19f551dcc32e9e937603ae4444981200cf2b11a8de71c6a4a2fabc8d34acb66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.0178",
    "kind": "arxiv",
    "version": 2
  }
}