Pith Number

pith:W235X4T3

pith:2013:W235X4T3AFZPAGAFNI5JJYFTZI

not attested not anchored not stored refs pending

Weighted projections into closed subspaces

Alejandra Maestripieri, Guillermina Fongi, Gustavo Corach

arxiv:1305.6357 v1 · 2013-05-28 · math.FA · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W235X4T3AFZPAGAFNI5JJYFTZI}

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	2026-05-18T03:24:40.948957Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6b7dbf27b0172f018056a3a94e0b3ca1d6fdde474719304ea04cc9a7a7b041a

Aliases

arxiv: 1305.6357 · arxiv_version: 1305.6357v1 · doi: 10.48550/arxiv.1305.6357 · pith_short_12: W235X4T3AFZP · pith_short_16: W235X4T3AFZPAGAF · pith_short_8: W235X4T3

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/W235X4T3AFZPAGAFNI5JJYFTZI \
  | 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: b6b7dbf27b0172f018056a3a94e0b3ca1d6fdde474719304ea04cc9a7a7b041a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b34b2a701845c6693844e2798b2f5a2cdf0154b330d2b8467597195819130a0a",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2013-05-28T03:38:59Z",
    "title_canon_sha256": "2494041caa81cba2a3bff5c5c3a0bcf77b80d39e9ef7e4c6cb6118f88ed5b590"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6357",
    "kind": "arxiv",
    "version": 1
  }
}