Pith Number

pith:IIMY4WTK

pith:2022:IIMY4WTKJ2LF7LLL3QYBOHP53S

not attested not anchored not stored refs pending

How to project onto the intersection of a closed affine subspace and a hyperplane

Dayou Mao, Heinz H. Bauschke, Walaa M. Moursi

arxiv:2206.11373 v1 · 2022-06-22 · math.OC · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IIMY4WTKJ2LF7LLL3QYBOHP53S}

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	2026-07-05T04:34:19.099516Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42198e5a6a4e965fad6bdc30171dfddc807c0e519ab51ebbb86472589d53cf08

Aliases

arxiv: 2206.11373 · arxiv_version: 2206.11373v1 · doi: 10.48550/arxiv.2206.11373 · pith_short_12: IIMY4WTKJ2LF · pith_short_16: IIMY4WTKJ2LF7LLL · pith_short_8: IIMY4WTK

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/IIMY4WTKJ2LF7LLL3QYBOHP53S \
  | 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: 42198e5a6a4e965fad6bdc30171dfddc807c0e519ab51ebbb86472589d53cf08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a64e42ec1d9ce4131806cdc7d489dd1f1c41424f8e3b0b4cd1bd7681e32559e3",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-06-22T20:46:20Z",
    "title_canon_sha256": "379ca14f1e2f356c646cd0e19d8d4ae20450d1001bebf163525e2a394e52a64b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2206.11373",
    "kind": "arxiv",
    "version": 1
  }
}