Pith Number

pith:AYEM2LXL

pith:2013:AYEM2LXLCVBY2W7IEUP3B4TJD5

not attested not anchored not stored refs pending

An Extended Fano's Inequality for the Finite Blocklength Coding

Pingyi Fan, Yunquan Dong

arxiv:1301.7630 v1 · 2013-01-31 · 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{AYEM2LXLCVBY2W7IEUP3B4TJD5}

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	2026-05-18T00:57:56.629805Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0608cd2eeb15438d5be8251fb0f2691f79fab2d1331c7c22fceb5d918e306969

Aliases

arxiv: 1301.7630 · arxiv_version: 1301.7630v1 · doi: 10.48550/arxiv.1301.7630 · pith_short_12: AYEM2LXLCVBY · pith_short_16: AYEM2LXLCVBY2W7I · pith_short_8: AYEM2LXL

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/AYEM2LXLCVBY2W7IEUP3B4TJD5 \
  | 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: 0608cd2eeb15438d5be8251fb0f2691f79fab2d1331c7c22fceb5d918e306969

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9803ae85abe90eef60bb31b9a47f101219ce22b934e398026def967643b7528e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-01-31T14:40:48Z",
    "title_canon_sha256": "a04367bf03bbe6293af3c1e5ff77309cd839082089366b66b8e7386920aa0171"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.7630",
    "kind": "arxiv",
    "version": 1
  }
}