Pith Number

pith:HB3UGHGV

pith:2009:HB3UGHGVWERUKEI2VMLHE2WOTU

not attested not anchored not stored refs pending

On the Sum Capacity of A Class of Cyclically Symmetric Deterministic Interference Channels

Abbas El Gamal, Bernd Bandemer, Gonzalo Vazquez-Vilar

arxiv:0901.4068 v1 · 2009-01-26 · 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{HB3UGHGVWERUKEI2VMLHE2WOTU}

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	2026-05-18T00:58:20.387067Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3877431cd5b12345111aab16726ace9d1b4cac9813d6c5e8c4386f8188e0b40e

Aliases

arxiv: 0901.4068 · arxiv_version: 0901.4068v1 · doi: 10.48550/arxiv.0901.4068 · pith_short_12: HB3UGHGVWERU · pith_short_16: HB3UGHGVWERUKEI2 · pith_short_8: HB3UGHGV

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/HB3UGHGVWERUKEI2VMLHE2WOTU \
  | 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: 3877431cd5b12345111aab16726ace9d1b4cac9813d6c5e8c4386f8188e0b40e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7521af46d7a196fc378ad21d0f6f5b267445cc37b50b5e29b3ca1ba35c5bcbbb",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-01-26T19:36:56Z",
    "title_canon_sha256": "7ff6089663653101f4180db21f4d2a410b70fd83844415e1cb370112814fbb1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4068",
    "kind": "arxiv",
    "version": 1
  }
}