Pith Number

pith:TX4W4PE5

pith:2015:TX4W4PE5HSS5TYVT2BJ3CP23ED

not attested not anchored not stored refs pending

Subspace selection for projection maximization with matroid constraints

Ali Pezeshki, Edwin K. P. Chong, Louis Scharf, Yuan Wang, Zhenliang Zhang

arxiv:1507.04822 v1 · 2015-07-17 · 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{TX4W4PE5HSS5TYVT2BJ3CP23ED}

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	2026-05-18T01:36:42.698347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9df96e3c9d3ca5d9e2b3d053b13f5b20d379d8239a7818cfa7e63a370fafdea9

Aliases

arxiv: 1507.04822 · arxiv_version: 1507.04822v1 · doi: 10.48550/arxiv.1507.04822 · pith_short_12: TX4W4PE5HSS5 · pith_short_16: TX4W4PE5HSS5TYVT · pith_short_8: TX4W4PE5

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/TX4W4PE5HSS5TYVT2BJ3CP23ED \
  | 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: 9df96e3c9d3ca5d9e2b3d053b13f5b20d379d8239a7818cfa7e63a370fafdea9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5d6d45667a920addf55f2b5a272c2345b91a2136649888bc9603842768923bd",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-07-17T02:58:48Z",
    "title_canon_sha256": "6bc89c50537df74bc6dd66c121aacb5b19c28f3c9e2f5621465dbd3d01aa4aff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.04822",
    "kind": "arxiv",
    "version": 1
  }
}