Pith Number

pith:RXBDUDT7

pith:2014:RXBDUDT7HCKCDPYAIDYQAKZTFQ

not attested not anchored not stored refs pending

A quick-and-dirty check for a one-dimensional active subspace

Paul G. Constantine

arxiv:1402.3838 v1 · 2014-02-16 · 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{RXBDUDT7HCKCDPYAIDYQAKZTFQ}

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	2026-05-18T02:58:55.454132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dc23a0e7f389421bf0040f1002b332c0a3dd8df2bb2ff3a10868ef0200a3795

Aliases

arxiv: 1402.3838 · arxiv_version: 1402.3838v1 · doi: 10.48550/arxiv.1402.3838 · pith_short_12: RXBDUDT7HCKC · pith_short_16: RXBDUDT7HCKCDPYA · pith_short_8: RXBDUDT7

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/RXBDUDT7HCKCDPYAIDYQAKZTFQ \
  | 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: 8dc23a0e7f389421bf0040f1002b332c0a3dd8df2bb2ff3a10868ef0200a3795

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17c7a37fbdcbcf74c6e08dbebc86b17b4fc1d19c0f77bb44faea3f98366b4960",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-02-16T20:09:51Z",
    "title_canon_sha256": "97b8f11a7fe9201c1bb65fca90d9f45f6793b25ef77a2cbff2266570e503a50c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.3838",
    "kind": "arxiv",
    "version": 1
  }
}