Pith Number

pith:RSFVL7B4

pith:2019:RSFVL7B4DJUBF7UA7GOUT3FX6H

not attested not anchored not stored refs pending

Degree 3 unramified cohomology of classifying spaces for exceptional groups

Sanghoon Baek

arxiv:1906.02087 v1 · 2019-06-05 · math.AG · math.GR · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RSFVL7B4DJUBF7UA7GOUT3FX6H}

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	2026-05-17T23:44:05.288460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c8b55fc3c1a6812fe80f99d49ecb7f1e4119fd2ceee875019fb36b0dc3b85cc

Aliases

arxiv: 1906.02087 · arxiv_version: 1906.02087v1 · doi: 10.48550/arxiv.1906.02087 · pith_short_12: RSFVL7B4DJUB · pith_short_16: RSFVL7B4DJUBF7UA · pith_short_8: RSFVL7B4

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/RSFVL7B4DJUBF7UA7GOUT3FX6H \
  | 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: 8c8b55fc3c1a6812fe80f99d49ecb7f1e4119fd2ceee875019fb36b0dc3b85cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e3503a7e471f633057cedb788b35f9ef0a38ca1f2ca85ad21475bdf374dac3d",
    "cross_cats_sorted": [
      "math.GR",
      "math.RA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-06-05T15:47:05Z",
    "title_canon_sha256": "11f96ca769f88e1b2a5d2be27ae5de9c34d0b04651ac477a572f7f3a99d68655"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.02087",
    "kind": "arxiv",
    "version": 1
  }
}