Pith Number

pith:U4UXEVJW

pith:2020:U4UXEVJW6WV47EDEFUITI7DQZG

not attested not anchored not stored refs pending

Simpler Grassmannian optimization

Ke Ye, Lek-Heng Lim, Zehua Lai

arxiv:2009.13502 v1 · 2020-09-28 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U4UXEVJW6WV47EDEFUITI7DQZG}

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.

Cited by

1 paper in Pith

On the packing dimension of unions and extensions of $k$-planes

Receipt and verification

First computed	2026-07-05T01:38:30.620693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a729725536f5abcf90642d11347c70c9bbc49565b5d823f72e33d13ae366f813

Aliases

arxiv: 2009.13502 · arxiv_version: 2009.13502v1 · doi: 10.48550/arxiv.2009.13502 · pith_short_12: U4UXEVJW6WV4 · pith_short_16: U4UXEVJW6WV47EDE · pith_short_8: U4UXEVJW

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/U4UXEVJW6WV47EDEFUITI7DQZG \
  | 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: a729725536f5abcf90642d11347c70c9bbc49565b5d823f72e33d13ae366f813

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9614f58278c43aea4b2c33cfb8085a55c9eaa150b3cdef517775bbf08794abe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-09-28T17:49:19Z",
    "title_canon_sha256": "97eb505e5a6748826347966dec889fb4996d4815b6c40257a006eb6411c3cbc9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.13502",
    "kind": "arxiv",
    "version": 1
  }
}