Pith Number

pith:LQHKGTFN

pith:2026:LQHKGTFNIPZHAEDBYIZWM2DMAR

not attested not anchored not stored refs pending

Essential contractibility of Banach algebras

Amir Sahami, Batoul S. Mortazavi-Samarin, Mehdi Rostami

arxiv:2606.09285 v1 · 2026-06-08 · 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{LQHKGTFNIPZHAEDBYIZWM2DMAR}

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	2026-06-09T02:08:12.385985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5c0ea34cad43f2701061c23366686c04436c8de25632b371e6b7d410dc62aa50

Aliases

arxiv: 2606.09285 · arxiv_version: 2606.09285v1 · doi: 10.48550/arxiv.2606.09285 · pith_short_12: LQHKGTFNIPZH · pith_short_16: LQHKGTFNIPZHAEDB · pith_short_8: LQHKGTFN

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/LQHKGTFNIPZHAEDBYIZWM2DMAR \
  | 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: 5c0ea34cad43f2701061c23366686c04436c8de25632b371e6b7d410dc62aa50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9168a9ff7d12a37270e5448ad7b9e8223a9a76326872912f022501d14b6a62c3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2026-06-08T09:52:25Z",
    "title_canon_sha256": "1334e27b4fec9355f2897c44fe7bbee5c53f5e56b5cf499eace7faa674c87fa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.09285",
    "kind": "arxiv",
    "version": 1
  }
}