Pith Number

pith:DA5FP3KP

pith:2017:DA5FP3KPUW7D7RJEFCAM3L2GX4

not attested not anchored not stored refs pending

Johnson pseudo-contractibility of certain Banach algebras and their nilpotent ideals

A. Pourabbas, A. Sahami, M. Askari-Sayah

arxiv:1712.05058 v2 · 2017-12-14 · 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{DA5FP3KPUW7D7RJEFCAM3L2GX4}

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	2026-05-18T00:05:09.421722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

183a57ed4fa5be3fc5242880cdaf46bf2be61719ec24cb3d0fd111b014363b79

Aliases

arxiv: 1712.05058 · arxiv_version: 1712.05058v2 · doi: 10.48550/arxiv.1712.05058 · pith_short_12: DA5FP3KPUW7D · pith_short_16: DA5FP3KPUW7D7RJE · pith_short_8: DA5FP3KP

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/DA5FP3KPUW7D7RJEFCAM3L2GX4 \
  | 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: 183a57ed4fa5be3fc5242880cdaf46bf2be61719ec24cb3d0fd111b014363b79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddd2714ad6b8b85e77a49efe2aedba7a7325c89e6e00522305708db59bc6060c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-12-14T00:18:46Z",
    "title_canon_sha256": "551c2136572515181a14e5e7c51b38083a6843c175e1d3c2847e8baa56273d5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.05058",
    "kind": "arxiv",
    "version": 2
  }
}