Pith Number

pith:XTO2GUYC

pith:2009:XTO2GUYCTI7RV6PIBWSR3JWS3F

not attested not anchored not stored refs pending

Monotone thematic factorizations of matrix functions

Alberto A. Condori

arxiv:0908.4284 v1 · 2009-08-28 · 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{XTO2GUYCTI7RV6PIBWSR3JWS3F}

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	2026-05-18T04:26:32.009994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bcdda353029a3f1af9e80da51da6d2d97f2a37ff5c3a8a3bd74f65ae8e15ea37

Aliases

arxiv: 0908.4284 · arxiv_version: 0908.4284v1 · doi: 10.48550/arxiv.0908.4284 · pith_short_12: XTO2GUYCTI7R · pith_short_16: XTO2GUYCTI7RV6PI · pith_short_8: XTO2GUYC

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/XTO2GUYCTI7RV6PIBWSR3JWS3F \
  | 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: bcdda353029a3f1af9e80da51da6d2d97f2a37ff5c3a8a3bd74f65ae8e15ea37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8faf6dc7589baeb8991b81caf93d73b9b8c14207ea010b3a69457ca835701470",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2009-08-28T20:29:13Z",
    "title_canon_sha256": "7ab716e30996a327dba1a1400cdfdb6b10dd8f86f64b074412698868f41ecd32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.4284",
    "kind": "arxiv",
    "version": 1
  }
}