Pith Number

pith:EL22WP72

pith:2020:EL22WP72Z3G7NRECUNHHZFQMZF

not attested not anchored not stored refs pending

On an $L^2$ extension theorem from log-canonical centres with log-canonical measures

Tsz On Mario Chan

arxiv:2008.03019 v3 · 2020-08-07 · math.CV · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EL22WP72Z3G7NRECUNHHZFQMZF}

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	2026-07-05T03:53:43.908182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22f5ab3ffacecdf6c482a34e7c960cc95722782e4f4364bdcf57c8ef0ecfcad2

Aliases

arxiv: 2008.03019 · arxiv_version: 2008.03019v3 · doi: 10.48550/arxiv.2008.03019 · pith_short_12: EL22WP72Z3G7 · pith_short_16: EL22WP72Z3G7NREC · pith_short_8: EL22WP72

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/EL22WP72Z3G7NRECUNHHZFQMZF \
  | 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: 22f5ab3ffacecdf6c482a34e7c960cc95722782e4f4364bdcf57c8ef0ecfcad2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b1b1f2486dc7a0833407f3dd96d8dd1328c321f37440a1b14c5ff93ef56486c",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2020-08-07T07:16:21Z",
    "title_canon_sha256": "0c3bb1d305437098289eb0639c676e7a602d692b5a3c766db995183aa430c77a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.03019",
    "kind": "arxiv",
    "version": 3
  }
}