Pith Number

pith:NV5I6VWE

pith:2010:NV5I6VWEDG6SZE4WM7E4CWGV7R

not attested not anchored not stored refs pending

A note on a matrix version of the Farkas lemma

Alja\v{z} Zalar

arxiv:1012.5420 v2 · 2010-12-24 · math.OA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NV5I6VWEDG6SZE4WM7E4CWGV7R}

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	2026-05-18T03:39:53.298939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d7a8f56c419bd2c939667c9c158d5fc43db4606fe74f935463c46c8af7a6e51

Aliases

arxiv: 1012.5420 · arxiv_version: 1012.5420v2 · doi: 10.48550/arxiv.1012.5420 · pith_short_12: NV5I6VWEDG6S · pith_short_16: NV5I6VWEDG6SZE4W · pith_short_8: NV5I6VWE

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/NV5I6VWEDG6SZE4WM7E4CWGV7R \
  | 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: 6d7a8f56c419bd2c939667c9c158d5fc43db4606fe74f935463c46c8af7a6e51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59b040dc93e140a55cfd1be98f7e68b19c1265b06a002c402a52c064709644f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2010-12-24T18:37:05Z",
    "title_canon_sha256": "3a375cb8826712e89f39bee2ca11b0c84ed55f70333fb5302873277d899cebec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.5420",
    "kind": "arxiv",
    "version": 2
  }
}