Pith Number

pith:DJX54HEE

pith:2009:DJX54HEEB7NFA5PS37KJXVIORF

not attested not anchored not stored refs pending

Refined Coding Bounds and Code Constructions for Coherent Network Error Correction

Chi-Kin Ngai, Raymond W. Yeung, Shenghao Yang

arxiv:0904.1897 v2 · 2009-04-13 · 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{DJX54HEEB7NFA5PS37KJXVIORF}

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	2026-05-18T03:37:42.103932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a6fde1c840fda5075f2dfd49bd50e896b362c6debddbc3436d452e2621348e2

Aliases

arxiv: 0904.1897 · arxiv_version: 0904.1897v2 · doi: 10.48550/arxiv.0904.1897 · pith_short_12: DJX54HEEB7NF · pith_short_16: DJX54HEEB7NFA5PS · pith_short_8: DJX54HEE

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/DJX54HEEB7NFA5PS37KJXVIORF \
  | 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: 1a6fde1c840fda5075f2dfd49bd50e896b362c6debddbc3436d452e2621348e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b8dbec5bc409669ebc7a761fdcec8a5b88aea7ec4c7d57d6996385e790aeb3a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-04-13T02:04:21Z",
    "title_canon_sha256": "b56da2b98b6963c65fdc329422e257a522e49fee8ab98a8f8f3a3a9734e7d5cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.1897",
    "kind": "arxiv",
    "version": 2
  }
}