Pith Number

pith:3MD7W6BU

pith:2009:3MD7W6BU6KDX4J7YD2S6JUU2OL

not attested not anchored not stored refs pending

On Active Learning and Supervised Transmission of Spectrum Sharing Based Cognitive Radios by Exploiting Hidden Primary Radio Feedback

Rui Zhang

arxiv:0905.3436 v2 · 2009-05-21 · 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{3MD7W6BU6KDX4J7YD2S6JUU2OL}

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	2026-05-18T02:24:55.684177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db07fb7834f2877e27f81ea5e4d29a72fd05066469af5f8c3ffa9a8fbca9b26c

Aliases

arxiv: 0905.3436 · arxiv_version: 0905.3436v2 · doi: 10.48550/arxiv.0905.3436 · pith_short_12: 3MD7W6BU6KDX · pith_short_16: 3MD7W6BU6KDX4J7Y · pith_short_8: 3MD7W6BU

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/3MD7W6BU6KDX4J7YD2S6JUU2OL \
  | 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: db07fb7834f2877e27f81ea5e4d29a72fd05066469af5f8c3ffa9a8fbca9b26c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "787ca256177863907c987501aba19de74db63570e4140cf4d1eff639e1f1d36a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-05-21T04:18:42Z",
    "title_canon_sha256": "3e697623dcc7049b083fc40b84b0d52a0322a53e0d10732dd8f0efaca8ccecb4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3436",
    "kind": "arxiv",
    "version": 2
  }
}