Pith Number

pith:6F7SGP7L

pith:2013:6F7SGP7LJZQ3QM3RYSHKZBUWGU

not attested not anchored not stored refs pending

Orthogonal forms and orthogonality preservers on real function algebras

Antonio M. Peralta, Jorge J. Garc\'es

arxiv:1309.3839 v1 · 2013-09-16 · 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{6F7SGP7LJZQ3QM3RYSHKZBUWGU}

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	2026-05-18T03:13:12.262576Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f17f233feb4e61b83371c48eac869635183699bb6809910f521980dc0067c70b

Aliases

arxiv: 1309.3839 · arxiv_version: 1309.3839v1 · doi: 10.48550/arxiv.1309.3839 · pith_short_12: 6F7SGP7LJZQ3 · pith_short_16: 6F7SGP7LJZQ3QM3R · pith_short_8: 6F7SGP7L

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/6F7SGP7LJZQ3QM3RYSHKZBUWGU \
  | 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: f17f233feb4e61b83371c48eac869635183699bb6809910f521980dc0067c70b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "97104280fcfdf526dcaf3b17bedcb7438c7a0fbb1c5173ba19a9a265e38cdfdf",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "math.OA",
    "submitted_at": "2013-09-16T07:32:31Z",
    "title_canon_sha256": "19c02f7bfdf29cf23b337f2d338cbf568ce5327f269fbcd160535212a2662f66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.3839",
    "kind": "arxiv",
    "version": 1
  }
}