Pith Number

pith:7C6UVEF6

pith:2014:7C6UVEF6PYYIJALPXMHYJ7JSWN

not attested not anchored not stored refs pending

Classifying invariant $\sigma$-ideals with analytic base on good Cantor measure spaces

Robert Ralowski, Szymon Zeberski, Taras Banakh

arxiv:1409.3922 v1 · 2014-09-13 · math.GN · math.DS · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7C6UVEF6PYYIJALPXMHYJ7JSWN}

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	2026-05-18T01:20:26.440762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8bd4a90be7e3084816fbb0f84fd32b37029ddbf0562170ab5a9c05ba7cd5438

Aliases

arxiv: 1409.3922 · arxiv_version: 1409.3922v1 · doi: 10.48550/arxiv.1409.3922 · pith_short_12: 7C6UVEF6PYYI · pith_short_16: 7C6UVEF6PYYIJALP · pith_short_8: 7C6UVEF6

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/7C6UVEF6PYYIJALPXMHYJ7JSWN \
  | 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: f8bd4a90be7e3084816fbb0f84fd32b37029ddbf0562170ab5a9c05ba7cd5438

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f81159f7aef7423c618cb2a4ef85ed360c24ba34ec43e69119c5bbbf7b4ef8d7",
    "cross_cats_sorted": [
      "math.DS",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2014-09-13T07:31:38Z",
    "title_canon_sha256": "53129897175fc74ebc668f22b31acb4d201422f319971b21ecfef6927d123b74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.3922",
    "kind": "arxiv",
    "version": 1
  }
}