Pith Number

pith:6TM7TDU3

pith:2007:6TM7TDU3VCZVEMHBUXF7342YLJ

not attested not anchored not stored refs pending

On the error exponent of variable-length block-coding schemes over finite-state Markov channels with feedback

Giacomo Como, Sekhar Tatikonda, Serdar Yuksel

arxiv:0707.2014 v1 · 2007-07-13 · 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{6TM7TDU3VCZVEMHBUXF7342YLJ}

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	2026-05-18T01:05:14.136118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f4d9f98e9ba8b35230e1a5cbfdf3585a5437ba11d3c38e743b06b8062fa238fc

Aliases

arxiv: 0707.2014 · arxiv_version: 0707.2014v1 · doi: 10.48550/arxiv.0707.2014 · pith_short_12: 6TM7TDU3VCZV · pith_short_16: 6TM7TDU3VCZVEMHB · pith_short_8: 6TM7TDU3

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/6TM7TDU3VCZVEMHBUXF7342YLJ \
  | 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: f4d9f98e9ba8b35230e1a5cbfdf3585a5437ba11d3c38e743b06b8062fa238fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc46307d82450f4f785d0f654253f83a94d4ff354e476a83dc3291cec606af4f",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2007-07-13T14:27:26Z",
    "title_canon_sha256": "da89523c4a9f3b3b65af287d2054d24c5dca8061db672661cf360990e4d6524d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.2014",
    "kind": "arxiv",
    "version": 1
  }
}