Pith Number

pith:BTBJZW5U

pith:2016:BTBJZW5UUDWRK3FIR5GYCQOHIT

not attested not anchored not stored refs pending

Computations in $C_{pq}$-Bredon cohomology

Samik Basu, Surojit Ghosh

arxiv:1612.02159 v2 · 2016-12-07 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BTBJZW5UUDWRK3FIR5GYCQOHIT}

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	2026-05-17T23:54:44.607764Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cc29cdbb4a0ed156ca88f4d8141c744d1dc94f679b2738ca36d554a5d9e097c

Aliases

arxiv: 1612.02159 · arxiv_version: 1612.02159v2 · doi: 10.48550/arxiv.1612.02159 · pith_short_12: BTBJZW5UUDWR · pith_short_16: BTBJZW5UUDWRK3FI · pith_short_8: BTBJZW5U

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/BTBJZW5UUDWRK3FIR5GYCQOHIT \
  | 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: 0cc29cdbb4a0ed156ca88f4d8141c744d1dc94f679b2738ca36d554a5d9e097c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3edb446dea8c154345741f91b5b368b1c49814f15357dabe8ddbcb1275d02ade",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2016-12-07T09:21:11Z",
    "title_canon_sha256": "3d9c7960cb18daa31545c2985e7f010f42d2479334e7d6da2ebd5c96d3218c45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.02159",
    "kind": "arxiv",
    "version": 2
  }
}