Pith Number

pith:IKMPVMCY

pith:2019:IKMPVMCYQWV6TPV3U5UY2YP7L4

not attested not anchored not stored refs pending

Concrete Barriers to Quantifier Elimination in Finite-Dimensional C*-algebras

Christopher J. Eagle, Todd Schmid

arxiv:1905.12153 v2 · 2019-05-29 · math.LO · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IKMPVMCYQWV6TPV3U5UY2YP7L4}

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	2026-05-17T23:44:41.939230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4298fab05885abe9bebba7698d61ff5f2f4173cdf14146e188636628604334ff

Aliases

arxiv: 1905.12153 · arxiv_version: 1905.12153v2 · doi: 10.48550/arxiv.1905.12153 · pith_short_12: IKMPVMCYQWV6 · pith_short_16: IKMPVMCYQWV6TPV3 · pith_short_8: IKMPVMCY

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/IKMPVMCYQWV6TPV3U5UY2YP7L4 \
  | 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: 4298fab05885abe9bebba7698d61ff5f2f4173cdf14146e188636628604334ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ed66a8c956499ada5a40449251fe48843c9bc19e2731ebdafabea501e118eaa",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-05-29T01:08:51Z",
    "title_canon_sha256": "e586caa51333c8108cf4b51c8ffcb48037ed10b0b6ba231cbf72b419edf6a7c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.12153",
    "kind": "arxiv",
    "version": 2
  }
}