Pith Number

pith:YR6SQOI7

pith:2012:YR6SQOI7XKGZBVLZPMZNF5MUAC

not attested not anchored not stored refs pending

Embedded surfaces for symplectic circle actions

Dong Youp Suh, Min Kyu Kim, Yunhyung Cho

arxiv:1207.4977 v2 · 2012-07-20 · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YR6SQOI7XKGZBVLZPMZNF5MUAC}

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	2026-05-18T01:23:31.746487Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c47d28391fba8d90d5797b32d2f594009866200675aaeaae1ffd0b495613a1b6

Aliases

arxiv: 1207.4977 · arxiv_version: 1207.4977v2 · doi: 10.48550/arxiv.1207.4977 · pith_short_12: YR6SQOI7XKGZ · pith_short_16: YR6SQOI7XKGZBVLZ · pith_short_8: YR6SQOI7

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/YR6SQOI7XKGZBVLZPMZNF5MUAC \
  | 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: c47d28391fba8d90d5797b32d2f594009866200675aaeaae1ffd0b495613a1b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12b3c25a4aad77b4a099bbc0a986d344f10584d6fe53f9aaef8aa6198b01023c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2012-07-20T15:19:21Z",
    "title_canon_sha256": "706c1d01a5af05bc025db6d7ed4a68d43c6772018d0357028bddf20c39f7de81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4977",
    "kind": "arxiv",
    "version": 2
  }
}