Pith Number

pith:L7AI6HUD

pith:2009:L7AI6HUDUKQWFTG2RTLDY4ABHQ

not attested not anchored not stored refs pending

Convexity properties of the condition number II

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

arxiv:0910.5936 v3 · 2009-10-30 · math.DG · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L7AI6HUDUKQWFTG2RTLDY4ABHQ}

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	2026-05-18T03:56:10.874035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fc08f1e83a2a162ccda8cd63c70013c0623b605cbdd010b45fe92522f7623c8

Aliases

arxiv: 0910.5936 · arxiv_version: 0910.5936v3 · doi: 10.48550/arxiv.0910.5936 · pith_short_12: L7AI6HUDUKQW · pith_short_16: L7AI6HUDUKQWFTG2 · pith_short_8: L7AI6HUD

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/L7AI6HUDUKQWFTG2RTLDY4ABHQ \
  | 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: 5fc08f1e83a2a162ccda8cd63c70013c0623b605cbdd010b45fe92522f7623c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5ade573639941ba54cebe872a017785e61884036e0197a3de86afd5648201b7",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-10-30T18:17:35Z",
    "title_canon_sha256": "b0f366c14fe70b90b456dec11461429f8a3e8725b038c8d9096589385a1c8d36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5936",
    "kind": "arxiv",
    "version": 3
  }
}