Pith Number

pith:SMOLWDKD

pith:2010:SMOLWDKDB22UTBTZRZ3TPYUCLW

not attested not anchored not stored refs pending

Improved construction of irregular progressive edge-growth Tanner graphs

David Elkouss, Jesus Martinez-Mateo, Vicente Martin

arxiv:1007.3588 v2 · 2010-07-21 · 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{SMOLWDKDB22UTBTZRZ3TPYUCLW}

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	2026-05-18T04:25:13.163913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

931cbb0d430eb54986798e7737e2825d88ba6ae4728739f083ce207c5e6fb04b

Aliases

arxiv: 1007.3588 · arxiv_version: 1007.3588v2 · doi: 10.48550/arxiv.1007.3588 · pith_short_12: SMOLWDKDB22U · pith_short_16: SMOLWDKDB22UTBTZ · pith_short_8: SMOLWDKD

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/SMOLWDKDB22UTBTZRZ3TPYUCLW \
  | 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: 931cbb0d430eb54986798e7737e2825d88ba6ae4728739f083ce207c5e6fb04b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "456ecf976a20f5c8f4a81bb67fca64fbd9b213588a95ae01c8002572aa1b8e2a",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-07-21T09:12:06Z",
    "title_canon_sha256": "697aec90bd42451ff79d32a3f930802e71898ccb0883642ee268f3dd4f8e33c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1007.3588",
    "kind": "arxiv",
    "version": 2
  }
}