Pith Number

pith:IY6DKTA3

pith:2016:IY6DKTA37NYNJKEPR55J2EIJBT

not attested not anchored not stored refs pending

Bianalytic Maps Between Free Spectrahedra

Igor Klep, J. William Helton, Meric Augat, Scott McCullough

arxiv:1604.04952 v4 · 2016-04-18 · math.FA · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IY6DKTA37NYNJKEPR55J2EIJBT}

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	2026-05-17T23:58:54.875541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

463c354c1bfb70d4a88f8f7a9d11090ce584090330df9d5706ce859802c3fc2f

Aliases

arxiv: 1604.04952 · arxiv_version: 1604.04952v4 · doi: 10.48550/arxiv.1604.04952 · pith_short_12: IY6DKTA37NYN · pith_short_16: IY6DKTA37NYNJKEP · pith_short_8: IY6DKTA3

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/IY6DKTA37NYNJKEPR55J2EIJBT \
  | 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: 463c354c1bfb70d4a88f8f7a9d11090ce584090330df9d5706ce859802c3fc2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d8a4bdd22c718e68ca7288c99881134a469b404dab5124f069c8a12210ea2ae",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2016-04-18T01:26:14Z",
    "title_canon_sha256": "3c7ff6f2c145b1f00de4375c3b5631925d28b2a8c81e00f0a11f5317e935628f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04952",
    "kind": "arxiv",
    "version": 4
  }
}