Pith Number

pith:IIKHWKCY

pith:2026:IIKHWKCY3PLMJCL5QVSJY362UF

not attested not anchored not stored refs pending

Spectral density estimation for normal matrices

Cameron Musco, Christopher Musco, John Urschel, Nicholas West, Rikhav Shah

arxiv:2605.31430 v1 · 2026-05-29 · math.NA · cs.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{IIKHWKCY3PLMJCL5QVSJY362UF}

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	2026-06-01T02:04:05.365899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42147b2858dbd6c4897d85649c6fdaa1442805df47713efe9a2fa18ae2494c0f

Aliases

arxiv: 2605.31430 · arxiv_version: 2605.31430v1 · doi: 10.48550/arxiv.2605.31430 · pith_short_12: IIKHWKCY3PLM · pith_short_16: IIKHWKCY3PLMJCL5 · pith_short_8: IIKHWKCY

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/IIKHWKCY3PLMJCL5QVSJY362UF \
  | 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: 42147b2858dbd6c4897d85649c6fdaa1442805df47713efe9a2fa18ae2494c0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef3a36a5ea633911427b16903eb255e599388c776d8e18e895ea44e1574bba42",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-05-29T15:26:39Z",
    "title_canon_sha256": "6d94acb65916ffa7e82f07933611857bbb9535e1b6fbff3af8b400c6f86058dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.31430",
    "kind": "arxiv",
    "version": 1
  }
}