Pith Number

pith:XW3TNCKL

pith:2011:XW3TNCKL4UIJZNVLWVY3TRLGSY

not attested not anchored not stored refs pending

Linear Index Coding via Semidefinite Programming

Eden Chlamtac, Ishay Haviv

arxiv:1107.1958 v1 · 2011-07-11 · cs.DS · cs.DM · 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{XW3TNCKL4UIJZNVLWVY3TRLGSY}

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	2026-05-18T02:21:42.976741Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdb736894be5109cb6abb571b9c566963eaf7cf38f15d1c8e93bab8ec9664f11

Aliases

arxiv: 1107.1958 · arxiv_version: 1107.1958v1 · doi: 10.48550/arxiv.1107.1958 · pith_short_12: XW3TNCKL4UIJ · pith_short_16: XW3TNCKL4UIJZNVL · pith_short_8: XW3TNCKL

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/XW3TNCKL4UIJZNVLWVY3TRLGSY \
  | 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: bdb736894be5109cb6abb571b9c566963eaf7cf38f15d1c8e93bab8ec9664f11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19dcfc99cb4dc8800a62392f3211ff9c13aba7c0ceea731f39d359f8cee86251",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.IT",
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-07-11T08:20:46Z",
    "title_canon_sha256": "57329beb73bf413f7541c515799978afb688814fd6a789e8660c16a1339ba962"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1958",
    "kind": "arxiv",
    "version": 1
  }
}