Pith Number

pith:MQWLFEWK

pith:2018:MQWLFEWK6PWO6ZLLDQLQKQBU4M

not attested not anchored not stored refs pending

A Probabilistic Subspace Bound with Application to Active Subspaces

Ilse C.F. Ipsen, John T. Holodnak, Ralph C. Smith

arxiv:1801.00682 v1 · 2018-01-02 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MQWLFEWK6PWO6ZLLDQLQKQBU4M}

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	2026-05-18T00:26:52.634897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

642cb292caf3ecef656b1c17054034e339b3a830f6c5626dd8079b63c3c19666

Aliases

arxiv: 1801.00682 · arxiv_version: 1801.00682v1 · doi: 10.48550/arxiv.1801.00682 · pith_short_12: MQWLFEWK6PWO · pith_short_16: MQWLFEWK6PWO6ZLL · pith_short_8: MQWLFEWK

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/MQWLFEWK6PWO6ZLLDQLQKQBU4M \
  | 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: 642cb292caf3ecef656b1c17054034e339b3a830f6c5626dd8079b63c3c19666

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "789c8c08323b061b27b6ab47d647d0e221d06218632e8b386faf3101c1fe71c4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-01-02T15:19:20Z",
    "title_canon_sha256": "a1facc8bf4f81f184ef9abf6419a5219e460e8b838105bdf2c8801d761966719"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.00682",
    "kind": "arxiv",
    "version": 1
  }
}