Pith Number

pith:JXKNBJNT

pith:2008:JXKNBJNTVSKIOKO5VHZCJJJPMV

not attested not anchored not stored refs pending

Convexity properties of the condition number

Carlos Beltr\'an, Gregorio Malajovich, Jean-Pierre Dedieu, Mike Shub

arxiv:0806.0395 v2 · 2008-06-02 · math.NA · cs.NA · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JXKNBJNTVSKIOKO5VHZCJJJPMV}

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	2026-06-03T22:06:06.580934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4dd4d0a5b3ac948729dda9f224a52f654c6b7875bd0e2f761b0b7b173c9d4f6e

Aliases

arxiv: 0806.0395 · arxiv_version: 0806.0395v2 · doi: 10.48550/arxiv.0806.0395 · pith_short_12: JXKNBJNTVSKI · pith_short_16: JXKNBJNTVSKIOKO5 · pith_short_8: JXKNBJNT

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/JXKNBJNTVSKIOKO5VHZCJJJPMV \
  | 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: 4dd4d0a5b3ac948729dda9f224a52f654c6b7875bd0e2f761b0b7b173c9d4f6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dee816558f621f424b6377184edfea5bda3e0d942bc79763122e001785bca68d",
    "cross_cats_sorted": [
      "cs.NA",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-06-02T21:00:15Z",
    "title_canon_sha256": "da0f37cf9ca8042f3d802f6fc2bba22bf289760f7f206830afee85f55d4d945e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.0395",
    "kind": "arxiv",
    "version": 2
  }
}