Pith Number

pith:I7Z42VAS

pith:2017:I7Z42VASEGDQFP3JIES57YK4WP

not attested not anchored not stored refs pending

Positive scalar curvature and connected sums

Guangxiang Su, Weiping Zhang

arxiv:1705.00553 v2 · 2017-05-01 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I7Z42VASEGDQFP3JIES57YK4WP}

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	2026-05-18T00:43:44.867157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47f3cd5412218702bf694125dfe15cb3e4b3cec4ca2def429310211cbcaaef28

Aliases

arxiv: 1705.00553 · arxiv_version: 1705.00553v2 · doi: 10.48550/arxiv.1705.00553 · pith_short_12: I7Z42VASEGDQ · pith_short_16: I7Z42VASEGDQFP3J · pith_short_8: I7Z42VAS

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/I7Z42VASEGDQFP3JIES57YK4WP \
  | 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: 47f3cd5412218702bf694125dfe15cb3e4b3cec4ca2def429310211cbcaaef28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7040a24d6241e67423af9002b3a8905e55f5303bf4ea4d42c5ef875b2a4424a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-05-01T14:58:48Z",
    "title_canon_sha256": "39d77bfd56bdf9edd1ba0e23427ca9df9d197720f64a860362996ec830a07274"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.00553",
    "kind": "arxiv",
    "version": 2
  }
}